What this quiz covers
This quiz focuses on Differentiating Fact And Opinion, giving you a quick way to practice the rules, question types, and explanations that matter most for ACT Reading.
1 My grandfather kept his workshop locked except on Sundays, 2 when he allowed us to watch him repair clocks. 3 He had trained in Zurich for six years before 4 opening his shop on Elm Street in 1958, and 5 the certificate hung, yellowed, above his workbench. I thought 6 his hands were the steadiest I had ever seen, 7 though my mother insisted his eyesight had begun failing 8 by then. He never wasted a single spring or 9 gear; every discarded piece went into a labeled tin. 10 To me, this carefulness seemed less like habit than 11 devotion, the quiet discipline of someone who believed small 12 things deserved the same attention as large ones. Some 13 customers complained that he charged too much, but I 14 always thought his prices were fair for the work.
Which of the following is a verifiable fact stated in the passage, rather than the narrator's opinion?
ACT Reading Quiz
Practice Differentiating Fact And Opinion in ACT Reading with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.
This quiz focuses on Differentiating Fact And Opinion, giving you a quick way to practice the rules, question types, and explanations that matter most for ACT Reading.
Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.
1 My grandfather kept his workshop locked except on Sundays, 2 when he allowed us to watch him repair clocks. 3 He had trained in Zurich for six years before 4 opening his shop on Elm Street in 1958, and 5 the certificate hung, yellowed, above his workbench. I thought 6 his hands were the steadiest I had ever seen, 7 though my mother insisted his eyesight had begun failing 8 by then. He never wasted a single spring or 9 gear; every discarded piece went into a labeled tin. 10 To me, this carefulness seemed less like habit than 11 devotion, the quiet discipline of someone who believed small 12 things deserved the same attention as large ones. Some 13 customers complained that he charged too much, but I 14 always thought his prices were fair for the work.
Which of the following is a verifiable fact stated in the passage, rather than the narrator's opinion?
Explanation: Lines 3-4 state plainly that he "had trained in Zurich for six years before opening his shop on Elm Street in 1958" — a specific, checkable biographical detail. Choice A restates the narrator's interpretive comparison in lines 10-11 ("seemed less like habit than devotion"), an impression, not a fact. Choice C reverses the passage's actual content: line 13 says "customers complained that he charged too much," not that they agreed his prices were fair — the narrator's fairness claim in line 14 is his own judgment. Choice D repeats the narrator's subjective impression in line 6 ("I thought his hands were the steadiest"), explicitly marked as a personal belief, not an established fact.
1 The gallery installed Marisol Ferran's bronze figures in 2 the north wing, a space with skylights that flood 3 the room with cold, even light. Ferran completed the 4 series over four years, casting each piece from clay 5 models she later destroyed, a fact confirmed by the 6 museum's own archives. Critics have called the figures cold 7 and unfeeling, but standing before them I found something 8 closer to restraint than coldness, a discipline that refuses 9 easy sentiment. The largest figure, nearly seven feet tall, 10 took eleven months to cast alone. Whatever one thinks 11 of Ferran's temperament, the technical achievement here is undeniable, 12 and it seems to me the finest bronze work 13 this museum has acquired in a decade.
Which of the following statements from the passage is a verifiable fact rather than the author's judgment?
Explanation: Line 9-10 gives a measurable, checkable detail: "The largest figure, nearly seven feet tall, took eleven months to cast alone." Choice A restates the author's own reaction in lines 7-8 ("I found something closer to restraint than coldness"), an interpretation, not a fact. Choice B is the author's superlative ranking (line 12-13), an evaluative claim no record could confirm. Choice D uses the word "undeniable" to assert an opinion as though it were settled — but whether an achievement is impressive remains a judgment, unlike the eleven-month casting time, which is a discrete, recorded duration.
1 We drove four hours to reach the house, arriving 2 just before the estate agent locked the gate for 3 the evening. The porch had sagged since I last 4 saw it, and ivy had climbed halfway up the 5 chimney. My brother said the place looked smaller than 6 he remembered, though I thought it looked exactly the 7 same, only tired. The county records listed the house 8 as built in 1911, sold twice since our grandmother's 9 death, and vacant for the past three years. Standing 10 in the empty kitchen, I felt certain that no 11 family could ever love this house the way ours 12 had, a thought I knew was unfair even as 13 I had it. My brother, more practical, only wanted 14 to know what the roof repairs would cost.
Which of the following best identifies a factual detail rather than a subjective impression in the passage?
Explanation: Lines 7-9 attribute this information to "the county records," which "listed the house as built in 1911, sold twice since our grandmother's death, and vacant for the past three years" — an external, checkable source. Choice B is the brother's personal impression (line 5), explicitly contrasted with the narrator's own differing impression in line 6. Choice C is the narrator's own feeling, which the text itself flags as "a thought I knew was unfair" (lines 10-13), marking it as opinion. Choice D misreads the text: the narrator actually describes the porch as having sagged (line 3) and merely adds that the whole house looked "tired" (line 6), a subjective impression, not a factual correction.
1 The renovation of the old textile mill preserved its 2 brick facade but replaced every interior beam with steel, 3 a substitution completed in eighteen months according to city 4 permit records. Preservationists argued the building lost its soul 5 in the process, though I would say it gained 6 a second life instead. The mill originally opened in 7 1887 and employed nearly four hundred workers at its 8 peak. Walking through the new atrium, glass now where 9 brick once stood, I found the space colder than 10 its critics claimed, more museum than workplace, though undeniably 11 safer than the structure it replaced. Whatever else can 12 be said, the building will stand for another century, 13 a claim no engineer I spoke with disputed.
Which of the following statements from the passage is a matter of factual record rather than critical judgment?
Explanation: Lines 6-8 provide a historical detail with a specific date and figure: "The mill originally opened in 1887 and employed nearly four hundred workers at its peak." Choice B is the author's own counterargument to preservationists in lines 4-6, a personal assessment, not a record. Choice C restates the author's sensory impression in lines 9-10 ("I found the space colder... more museum than workplace"). Choice D looks factual because engineers are cited, but it is still a forecast about the future — no engineer can verify how long a building will actually stand, so agreement about a prediction is not the same as an established fact.
1 Bats of the species Myotis lucifugus emit ultrasonic calls 2 at frequencies between twenty and fifty kilohertz, adjusting the 3 pitch and rate depending on how close they are 4 to their prey. Acoustic recordings from field studies show 5 call rates increasing from roughly ten calls per second 6 to more than one hundred during the final approach. 7 Watching these recordings converted into audible spectrograms, I find 8 it hard not to marvel at how elegant this 9 system is, refining itself in real time with a 10 precision that human-built sonar has never quite matched. Some 11 engineers dispute that comparison, but the bats, in my 12 opinion, remain the superior engineers.
The statement that call rates increase "from roughly ten calls per second to more than one hundred during the final approach" functions in the passage as:
Explanation: The sentence is explicitly attributed to "acoustic recordings from field studies," a measured data source, so it is a verifiable fact. The author's opinions appear afterward, in the claims about "how elegant this system is" and the bats being "the superior engineers," which are separate statements, not this call-rate figure. Choice C confuses the disputed comparison to sonar with the call-rate data, which no one in the passage disputes.
1 Eleanor Voss wrote most of her published poems between 2 midnight and four in the morning, a routine she 3 maintained for nearly thirty years according to her own 4 letters. Scholars have long debated whether this discipline sharpened 5 her imagery or simply exhausted it, and I confess 6 I lean toward the former. Her final collection, released 7 the year before her death, sold fewer than eight 8 hundred copies in its first printing, a number that 9 strikes me as a scandal given the book's precision. 10 Voss revised each poem by hand at least a 11 dozen times, drafts now held in a university archive. 12 To read those drafts is to understand that nothing 13 in her published work was accidental.
According to lines 6-9, which statement is a verifiable fact rather than the author's evaluation?
Explanation: Lines 7-8 report a specific, checkable sales figure: the collection "sold fewer than eight hundred copies in its first printing." Choice A repeats the author's reaction to that number in line 9 ("strikes me as a scandal"), an opinion, not the number itself. Choice B paraphrases the author's conclusion in lines 12-13, an interpretive judgment about the drafts, not a checkable claim. Choice C misattributes to fact what line 6 frames as the author's personal leaning in an unresolved scholarly debate ("I lean toward the former"), which is explicitly presented as contested rather than established.
1 The zebra mussel population in Lake Arden has grown 2 from an estimated two thousand individuals in 2015 to 3 more than four million today, according to biologists who 4 conduct annual dive surveys. These mussels filter enormous volumes 5 of water, and local fishermen have noted clearer water 6 and fewer algal blooms since the invasion began. Some 7 residents have welcomed this clarity, calling it an improvement. 8 That reaction strikes me as shortsighted. Filtering out algae 9 also strips away the base of the food web that 10 native fish depend on, and the apparent improvement in 11 water quality may be a symptom of an ecosystem 12 quietly collapsing rather than one worth celebrating.
Which of the following best distinguishes a fact reported in the passage from an interpretation offered about that fact?
Explanation: The population figure is attributed to biologists' "annual dive surveys," a verifiable source, while "shortsighted" is plainly the author's own evaluative reaction to residents' views. Choice B mislabels a factual filtering claim as opinion and a factual count as interpretation. Choice C wrongly calls the residents' subjective label a verified fact. Choice D falsely claims the author's speculative warning about collapse is confirmed by the same surveys, but the passage presents it as a possibility ("may be a symptom"), not a documented result.
1 Coach Aldana ran the same three drills every practice 2 for eleven years, a fact the whole team could 3 recite better than the school fight song. He never 4 raised his voice, not once that any player could 5 recall, yet somehow every one of us was more 6 afraid of his silence than of any shouting coach 7 we'd had before. His record was one hundred and 8 forty wins against sixty losses, numbers posted outside the 9 gym for anyone to check. I used to think 10 his calm was a kind of trick, a performance 11 designed to unsettle us more than encouragement ever could. 12 Whatever his method was, it worked better than anything 13 the district had tried in twenty years.
Which of the following is presented in the passage as a verifiable fact rather than an interpretation?
Explanation: Lines 7-9 state the record and note it was made of "numbers posted outside the gym for anyone to check" — an explicitly verifiable statistic. Choice A is the narrator's own theory about the coach's motives ("I used to think," line 9), an interpretation. Choice C is the narrator's comparative judgment in lines 12-13, unsupported by any cited record. Choice D describes a feeling attributed to the team (lines 5-6, "somehow every one of us was more afraid"), which is an emotional impression rather than something that could be checked against a record.
1 Astronomers using the Kessler Array have now confirmed the 2 presence of an exoplanet orbiting the red dwarf star 3 Gliese 912, a discovery based on tiny, repeated dips 4 in the star's brightness. The planet completes one orbit 5 every eleven days, and spectroscopic data suggest its atmosphere 6 contains water vapor. To me, this is among the 7 most thrilling findings of the decade, since it hints 8 that temperate worlds may be far more common than 9 textbooks once assumed. Skeptics will note, correctly, that water 10 vapor alone does not prove habitability, but I suspect 11 future missions will vindicate the optimism many of us 12 already feel about this modest, unassuming little star.
According to the passage, which statement is an opinion rather than a claim that could be checked against observational data?
Explanation: The phrase "To me, this is among the most thrilling findings of the decade" is explicitly framed as a personal reaction, not a measurement. The orbital period, the spectroscopic water-vapor result, and the identification of the host star are all reported as findings derived from instruments and data, making them verifiable rather than evaluative.
1 The diner on Route 9 had been open every 2 single day since 1962, including holidays, according to a 3 faded sign taped inside the door. My father used 4 to say the coffee there was the worst in 5 the county, and yet he drove twenty minutes out 6 of his way for it every Sunday morning without 7 fail. The owner, Mr. Petrakis, flipped the same recipe 8 of pancakes his father had used, never changing a 9 single ingredient in over fifty years. I always suspected 10 my father liked the ritual more than the food, 11 though he never once admitted it. The diner's pancake 12 recipe, in my opinion, was more beloved than anything 13 served at the newer places along the highway.
Which of the following is a fact stated in the passage rather than a personal judgment?
Explanation: Lines 1-3 attribute this detail to a physical record, "a faded sign taped inside the door," stating the diner "had been open every single day since 1962, including holidays" — a checkable claim. Choice B is the father's personal complaint in lines 3-4 ("used to say the coffee there was the worst"), not an established fact. Choice C is the narrator's own suspicion, explicitly marked as such in line 9 ("I always suspected"). Choice D is explicitly labeled the narrator's opinion in lines 11-12 ("in my opinion"), making it the clearest example of judgment rather than verifiable fact.
1 Marguerite Dutoit published her first paper on tidal patterns 2 in 1911, three years before she was permitted to 3 join the national academy that had long excluded women. 4 Her calculations, later verified by two independent observatories, corrected 5 an error that had stood unchallenged for nearly a 6 decade. Some of her contemporaries dismissed her methods as 7 unrigorous, a charge historians now consider baseless given the 8 precision of her later findings. I find it difficult 9 not to see her exclusion from the academy as 10 the greater scandal, far more damaging to science than 11 any error she ever corrected. She retired from active 12 research in 1926, having published eleven papers in total, 13 six of them in leading journals.
Which of the following is a verifiable fact from the passage rather than the author's assessment?
Explanation: Lines 12-13 give a specific, checkable count: she published "eleven papers in total, six of them in leading journals." Choice A is the author's own judgment, introduced with "I find it difficult not to see" (lines 8-9), explicitly a personal view. Choice C reports what historians "now consider," which is still an evaluative consensus about rigor rather than a fixed, measurable fact like a paper count. Choice D is the author's comparative claim in lines 9-11, weighing one harm against another, a judgment that cannot be independently verified the way a publication count can.
1 When the state raised its minimum wage to fifteen 2 dollars an hour last year, the number of workers earning 3 at or below that wage rose from six percent 4 to nine percent of the workforce, according to labor 5 department records. Restaurant owners along Main Street argue that 6 the increase forced them to trim staff hours, and 7 several have since reduced weekend shifts. Whether this policy 8 helps or harms low-wage workers overall seems, to me, 9 far less settled than either side admits. The data 10 so far cover only fourteen months, hardly enough time 11 to separate a temporary adjustment from a lasting trend.
According to the passage, which claim is presented as an interpretation rather than a directly observed outcome?
Explanation: The passage attributes this claim to owners who "argue" a causal link between the wage increase and staffing decisions—an interpretation of cause, not an observed fact. By contrast, choice D reports the reduced shifts themselves as something that occurred, which is a directly observable outcome rather than a causal argument about why it happened. Choices A and B are figures sourced to labor department records.
1 My aunt planted the same six rows of tomatoes 2 every spring for over twenty years, rotating them slightly 3 east each season to rest the soil. The county 4 extension office once tested her soil and found it 5 richer than ninety percent of plots in the region, 6 a fact she mentioned so often it became a 7 kind of family joke. I never doubted, though, that 8 her garden was the most beautiful thing on our 9 street, more beautiful even than the neighbor's roses that 10 won awards at the fair. She staked each tomato 11 plant by hand, using stakes she cut herself from 12 saplings behind the barn. Nothing she grew was ever 13 wasted; whatever the harvest didn't use, she canned or 14 gave away by the end of August.
Which of the following is a verifiable fact stated in the passage rather than the narrator's opinion?
Explanation: Lines 4-5 attribute this claim to an outside authority: "The county extension office once tested her soil and found it richer than ninety percent of plots in the region," a specific, checkable finding. Choice A restates the narrator's own assessment in lines 7-9 ("I never doubted... her garden was the most beautiful"), a personal judgment. Choice B is never stated in the passage; it is an unsupported generalization about her gardening wisdom. Choice D repeats the narrator's comparative opinion about the roses in lines 8-9, which is explicitly framed as the narrator's belief, not a tested result.
1 Seismographs beneath Mount Calder recorded more than four hundred 2 small tremors last month, a sharp increase from the 3 usual dozen or so. Gas sensors near the summit 4 also detected elevated sulfur dioxide levels, nearly triple the 5 baseline reading taken in spring. Local officials insist there 6 is no cause for alarm, describing the mountain as 7 merely "clearing its throat." I think that phrase understates 8 the risk considerably. A volcano that has been dormant 9 for eighty years does not necessarily behave the way 10 it did during its last quiet century, and residents 11 deserve a clearer warning than a folksy metaphor can 12 provide.
Which statement from the passage is a measurable result rather than an assessment of risk?
Explanation: The sulfur dioxide reading comes directly from gas sensors and is stated as a numerical comparison, making it a measurable fact. Choice B is the officials' reassuring characterization, and C and D are the author's own evaluative responses to that characterization, not sensor readings.
1 Between 1950 and 1970, the metropolitan region's outer suburbs 2 added roughly four hundred thousand residents, while the central 3 city lost nearly a hundred and twenty thousand, census 4 records show. Highway planners of that era celebrated the 5 new interstate loop as a triumph of mobility, connecting 6 workers to distant subdivisions in a fraction of the 7 time older roads allowed. Looking back, I think that 8 triumph came at a steep and largely unexamined cost. 9 The neighborhoods bulldozed to make room for the loop 10 were disproportionately poor, and the sense of community those 11 streets once held cannot be recovered by any amount 12 of highway efficiency.
Which of the following is a claim the passage treats as an established, checkable fact rather than as a matter of interpretation?
Explanation: The demographic claim about which neighborhoods were bulldozed is a descriptive fact about who lived there, of the same kind as the census-sourced population figures earlier in the passage. Choices A, C, and D are evaluative judgments—one made by the planners ("triumph of mobility") and two made by the author ("steep and largely unexamined cost," "cannot be recovered")—none of which are presented as data.
1 The pianist Odessa Kray played for ninety minutes without 2 once glancing at printed music, a detail confirmed by 3 the recording engineer who was present that night. Critics 4 in the front rows later disagreed about her tempo, 5 some calling it reckless, others calling it thrillingly precise. 6 I sat close enough to see her hands blur 7 during the final piece, a solo that lasted almost 8 eleven minutes according to the venue's own timing sheet. 9 To my ear, no pianist working today plays with 10 more daring, though I understand why some listeners left 11 unsettled rather than moved. Whatever the disagreement, the hall 12 sold out within an hour of tickets going on 13 sale, a rare occurrence at this venue.
Which of the following statements is an objective detail rather than a critical judgment about the performance?
Explanation: Lines 7-8 cite an objective source: the final piece "lasted almost eleven minutes according to the venue's own timing sheet," a recorded duration. Choice A is the author's personal ranking in lines 9-10 ("To my ear, no pianist working today plays with more daring"). Choice B overreaches beyond the text: the passage notes the show sold out (lines 11-13) but never claims this proves Kray is the city's most sought-after performer — that inference is unsupported. Choice C reflects a contested critical opinion mentioned in lines 4-5, where critics themselves disagreed, meaning it cannot be treated as settled fact.
1 In a widely cited experiment, participants who studied a 2 word list while chewing gum recalled twelve percent more 3 items than those who studied without gum, provided the 4 recall test also involved chewing gum. Researchers call this 5 effect context-dependent memory, since matching sensory conditions during study 6 and testing appears to strengthen retrieval. Frankly, I think 7 the popular coverage of this finding has gotten carried 8 away, treating gum-chewing as some kind of miracle study 9 aid rather than one small, situational cue among many. 10 The original researchers were careful; the headlines that followed 11 their work were not.
The statement that participants "recalled twelve percent more items than those who studied without gum" is best classified as:
Explanation: This is a specific numerical outcome of the described experiment, reported without evaluative language, so it is a fact rather than an opinion. The author's opinion appears later, when criticizing how "the popular coverage of this finding has gotten carried away"—the author objects to the interpretation of the result, not the twelve-percent figure itself, ruling out A, C, and D.
1 A recent survey of eight hundred employees at three 2 mid-sized firms found that seventy-one percent now work from 3 home at least three days a week, up from 4 nineteen percent before 2020. Managers at these firms report 5 that quarterly output, measured in completed projects, has held 6 steady rather than declined. Still, I remain unconvinced that 7 this arrangement serves anyone well in the long run. 8 Something intangible is lost when colleagues no longer share 9 a hallway, a coffee pot, or an unplanned conversation. 10 Efficiency metrics can be satisfied while an organization's culture 11 quietly hollows out, and no spreadsheet will register that 12 loss until it is too late to reverse.
The claim that "something intangible is lost when colleagues no longer share a hallway" functions primarily as:
Explanation: This claim is the author's personal conviction, introduced right after admitting that "quarterly output... has held steady rather than declined"—the author concedes the measurable data looks fine but insists something unmeasured is still lost. It is not a survey statistic (A), not what managers reported (C), and not confirmed by the output measurement (D), which the passage says shows no decline.
1 Beekeepers in the region reported average winter colony losses 2 of thirty-eight percent last year, compared with a historical 3 average of fifteen percent, according to a state apiary 4 association survey. Pesticide exposure, parasitic mites, and habitat loss 5 have all been proposed as contributing causes, though researchers 6 have not agreed on which factor dominates. To my 7 mind, the debate over a single cause misses the 8 point entirely; these pressures compound one another, and arguing 9 over rank order wastes time better spent restoring the 10 wildflower meadows that once buffered hives against any single 11 shock.
The passage's claim that colony losses reached "thirty-eight percent last year, compared with a historical average of fifteen percent" is best characterized as:
Explanation: The percentages are explicitly sourced to "a state apiary association survey," a documented data collection, making this a fact rather than a viewpoint. The disagreement the passage describes concerns which cause "dominates" losses, not the loss figures themselves, which rules out C and D. Choice A misattributes the statistic to the author's own advocacy, but the author's opinion appears only afterward, regarding the causal debate.
1 Over the past decade, median rents in the Ridgeview 2 district have climbed by nearly sixty percent, according to 3 city assessment records, while the number of longtime residents 4 has fallen by roughly a third. Developers describe the 5 transformation as a long-overdue revival of a neglected corridor, 6 pointing to new bike lanes and refurbished storefronts as 7 proof of progress. I find that framing hard to 8 accept. A neighborhood is not merely a collection of 9 buildings to be polished; it is a network of 10 relationships that, once severed, rarely mends. The city's own 11 housing survey confirms that displaced families relocated, on average, 12 more than eleven miles from their original block.
Which of the following statements from the passage is presented as a verifiable fact rather than as a judgment offered by the author or by developers?
Explanation: The rent figure is explicitly sourced to "city assessment records," making it a checkable statistic. Choice B is the developers' evaluative framing, which the author explicitly disputes ("I find that framing hard to accept"). Choices C and D are the author's own generalized judgments about what neighborhoods are and how relationships behave, not claims drawn from records.