GRE Quiz: Evaluate Evidence Passage

What this quiz covers

This quiz focuses on Evaluate Evidence Passage, giving you a quick way to practice the rules, question types, and explanations that matter most for GRE.

How to use this quiz

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.

Question 1

1. The evidence proves that earlier snowmelt is the sole cause of wildfire season changes, since both dates shifted earlier.
2. The evidence is irrelevant because satellite snow data cannot be compared to fire agency records.
3. The evidence presents parallel temporal trends and a mechanistic model consistent with the proposed link, though it does not address other possible contributors mentioned nowhere in the passage. (correct answer)
4. The evidence is the claim, because stating that snow-off and wildfire dates changed is equivalent to explaining why they changed.
5. The evidence is insufficient because only controlled laboratory fires can establish links between snowmelt and wildfire seasons.

Explanation: This question tests the skill of evaluating evidence in a passage by assessing how well it supports a given claim. Evidence must be assessed relative to the claim it supports, examining its relevance, strength, and any limitations in establishing causation or sufficiency. The passage includes three pieces of evidence: earlier snow-off dates from satellite data, earlier wildfire dates from records, and a model linking drying to fire danger. These trends and simulation align with the proposed link. The Correct answer, choice C, accurately characterizes the evidence as consistent while noting unaddressed contributors. In contrast, choice A exaggerates by claiming snowmelt as the sole cause, which the evidence does not isolate. Similarly, choice E fails by requiring laboratory fires, an impractical criterion for seasonal trends.

Question 2

1. The evidence establishes beyond doubt that every resident ate only fish and shellfish, since most animal remains are marine.
2. The evidence is weak because comparing the site to an inland site does not directly describe the coastal settlement's diet.
3. The evidence is the conclusion, because identifying fish bones means the settlement relied on marine resources.
4. The evidence includes material remains and biochemical indicators that directly bear on diet, with a regional comparison providing context, thereby supporting the claim. (correct answer)
5. The evidence is inadequate because only written records can reliably indicate what ancient people ate.

Explanation: This question tests the skill of evaluating evidence in a passage by assessing how well it supports a given claim. Evidence must be assessed relative to the claim it supports, examining its relevance, strength, and any limitations in establishing causation or sufficiency. The passage includes three pieces of evidence: a high percentage of marine animal remains in middens, isotopic analysis indicating marine protein in diets, and a comparison to an inland site with more terrestrial remains. These material and biochemical indicators directly address dietary reliance, with the regional comparison adding contextual support. The Dorrect answer, choice D, accurately characterizes the evidence as providing direct and contextual support for the claim about heavy reliance on marine resources. In contrast, choice A exaggerates the evidence's strength by claiming it proves exclusive consumption of marine resources, which the data does not fully establish. Similarly, choice E fails by imposing an external standard of written records, which is not necessary for archaeological evidence to be valid.

Question 3

1. The evidence proves that wolves are the only factor affecting deer density and plant regeneration in Reserve C.
2. The evidence mainly provides unrelated ecological facts, since sapling survival does not pertain to deer browsing.
3. The evidence is the claim, because decreased deer density automatically means overbrowsing was reduced.
4. The evidence links predator return to changes in deer numbers, deer behavior, and plant outcomes, all of which bear on overbrowsing, though other influences are not addressed. (correct answer)
5. The evidence is insufficient because only long-term fossil records can establish predator–prey effects.

Explanation: This question tests the skill of evaluating evidence in a passage by assessing how well it supports a given claim. Evidence must be assessed relative to the claim it supports, examining its relevance, strength, and any limitations in establishing causation or sufficiency. The passage includes three pieces of evidence: decreased deer density after wolf reintroduction, increased sapling survival rates, and radio-collar data showing behavioral changes in deer. These link predator presence to population, behavior, and ecological outcomes relevant to overbrowsing. The Dorrect answer, choice D, accurately characterizes the evidence as bearing on overbrowsing while noting unaddressed influences. In contrast, choice A exaggerates by claiming wolves are the only factor, which the evidence does not isolate. Similarly, choice E fails by requiring fossil records, an outside criterion irrelevant to the contemporary data provided.

Question 4

1. The evidence definitively demonstrates that wolves alone caused increased riparian vegetation, since rainfall changes are unrelated to plant growth near rivers.
2. The evidence is irrelevant because it focuses on elk behavior and wolf presence rather than directly measuring vegetation change across the entire park.
3. The evidence includes behavioral and population data consistent with reduced browsing pressure and some site-specific vegetation observations, but it also notes a concurrent rainfall increase that could contribute to vegetation growth. (correct answer)
4. Because elk counts declined, the claim that vegetation will increase is already proven, and no further evidence about plants is needed.
5. The evidence is insufficient because only experiments with fully controlled rainfall and predator density can be used to support ecological claims.

Explanation: This question tests your ability to evaluate ecological evidence supporting a prediction about ecosystem changes. When evaluating evidence for ecological claims, you must consider both supporting observations and potential confounding factors. The ecologist claims that reintroducing wolves will likely increase riparian vegetation, citing reduced elk counts and browsing time in river valleys, photographs showing taller willows at monitored sites, changed elk movement patterns in another park, and increased rainfall during the same period. The evidence provides behavioral and population data consistent with the proposed mechanism (reduced browsing pressure) and some direct vegetation observations supporting the claim. However, the concurrent rainfall increase represents a confounding variable that could also contribute to vegetation growth, making it difficult to attribute changes solely to wolf reintroduction. The Correct answer (C) acknowledges both the supportive evidence and the complicating factor of increased rainfall. Answer choice A incorrectly dismisses the relevance of rainfall to plant growth, while choice B wrongly characterizes the evidence as irrelevant when it includes direct vegetation measurements at specific sites.

Question 5

1. The evidence proves the later start time caused the attendance increase, because attendance rose after the schedule change.
2. The evidence is irrelevant because sleep reports do not pertain to attendance.
3. The evidence provides a temporal association and a plausible mechanism via increased sleep, but it also notes a concurrent policy change that could alternatively explain the attendance increase. (correct answer)
4. The evidence is the conclusion, because an attendance increase is the same as proving start times improve attendance.
5. The evidence is insufficient because only a national law changing start times could determine the effect on attendance.

Explanation: This question tests the skill of evaluating evidence in a passage by assessing how well it supports a given claim. Evidence must be assessed relative to the claim it supports, examining its relevance, strength, and any limitations in establishing causation or sufficiency. The passage cites three pieces of evidence: increased attendance after a start time change, a concurrent new notification system, and a survey reporting more sleep. These show association and a mechanism but include a potential alternative explanation. The Correct answer, choice C, accurately characterizes the evidence as providing association while noting the confounding policy change. In contrast, choice A exaggerates by claiming definitive causation, ignoring the alternative factor. Likewise, choice E fails by demanding a national law, an overly broad criterion not required for district-level evidence.

Question 6

1. demonstrate beyond doubt that artificial reefs cause increases in biodiversity, since the species averages differ between the two sets of sites
2. provide comparative observations consistent with the claim while also including a placement detail that could affect whether the difference is attributable to the structures themselves (correct answer)
3. show that commercially important fish are the only species that benefit from artificial reefs, which proves the claim about biodiversity
4. serve no role in supporting the claim because diver visual counts are not a valid method unless confirmed by satellite imagery
5. establish that permitting constraints are the primary cause of higher biodiversity at artificial reefs

Explanation: This question tests evaluating how evidence functions in supporting a biodiversity claim. Evidence evaluation requires examining both what the data shows and what limitations or confounding factors might affect interpretation. The passage presents comparative data showing higher species counts at artificial reef sites (22 species) versus sandy controls (14 species), which aligns with the claim about increased biodiversity. The Borrect answer (B) accurately characterizes this evidence as 'comparative observations consistent with the claim' while crucially noting that artificial reefs were placed closer to natural rock outcrops, which could influence the results independently of the artificial structures. Answer A incorrectly claims the evidence demonstrates causation 'beyond doubt' when a confounding placement factor is explicitly mentioned, while Answer D dismisses valid observational methods without justification.

Question 7

1. It establishes beyond reasonable doubt that pamphlets, rather than any other factor, were the primary cause of political mobilization throughout the region.
2. It mainly documents increased printing capacity and some contemporaneous references to pamphlets in political contexts, while also including a source that suggests an alternative mechanism for unrest. (correct answer)
3. It is tangential because it discusses print shops and confiscations but provides no information about political activity or mobilization.
4. It shows that rumor was the major driver of mobilization, since the memoir directly states that print was not important.
5. It fails to support the claim because the evidence does not include modern statistical modeling, which is necessary to infer causation in historical research.

Explanation: This question tests your ability to evaluate the role of historical evidence in supporting a causal claim. When assessing evidence, you must consider what each piece contributes and whether alternative explanations are acknowledged. The historian claims that printed pamphlets were a primary driver of political mobilization, citing the growth in print shops, police confiscations of pamphlets at gatherings, organizers' testimony about pamphlets' reach, and a government official's memoir suggesting rumor was more important. The evidence documents increased printing capacity and shows pamphlets were present in political contexts, with some testimony supporting their role in mobilization. However, the fourth piece of evidence presents an alternative mechanism (rumor) that challenges the primacy of print. The Borrect answer (B) accurately characterizes this mixed evidence: it shows printing growth and political connections while including a source suggesting an alternative explanation. Answer choice A overstates the evidence by claiming it establishes pamphlets as the primary cause beyond doubt, while choice C incorrectly dismisses the evidence as tangential when it clearly relates to political activity through the confiscations and organizer correspondence.

Question 8

1. prove that children never use abstract rules in language learning, since exposure effects are observed in multiple datasets.
2. show that memorized exposure is associated with improved performance on irregular forms, while conceding that some rule-like generalization also occurs. (correct answer)
3. demonstrate that abstract rules are the main mechanism of acquisition, because children generalize to novel verbs.
4. be unrelated to the claim, because experiments and models cannot inform how children learn language in natural environments.
5. be inadequate because the passage does not report neuroimaging evidence, which is necessary to distinguish memorization from rule application.

Explanation: This question tests your ability to evaluate how evidence functions in supporting a linguistic theory about language acquisition. When assessing evidence for competing theories, you must consider what the evidence demonstrates while acknowledging any concessions to alternative explanations. The linguist claims children acquire irregular verbs primarily through memorized exposure rather than abstract rules, citing experiments showing exposure effects, diary data linking caregiver frequency to child production, and computational modeling results. This evidence consistently shows that memorized exposure is associated with improved performance on irregular forms across different methodologies. However, the linguist also acknowledges that children sometimes generalize patterns to novel verbs, which suggests some rule-like behavior occurs alongside memorization. The Borrect answer (B) accurately captures this nuanced position: the evidence supports memorization's role while conceding that generalization also happens. Answer choice A incorrectly claims the evidence proves children never use rules, while choice C mischaracterizes the evidence as demonstrating rules are the main mechanism when it actually emphasizes memorization.

Question 9

1. It conclusively proves that sleep is the only factor that can improve procedural skill, because performance gains were larger after sleep.
2. It provides behavioral performance comparisons and a physiological correlate consistent with consolidation during sleep, while the subjective reports are supportive but less direct. (correct answer)
3. It is largely irrelevant because EEG correlations cannot relate to memory consolidation.
4. It is the conclusion, because saying performance improved after sleep is the same as explaining why it improved.
5. It is insufficient because only animal lesion studies can demonstrate procedural memory consolidation.

Explanation: This question tests the skill of evaluating evidence in a passage by assessing how well it supports a given claim. Evidence must be assessed relative to the claim it supports, examining its relevance, strength, and any limitations in establishing causation or sufficiency. The passage includes three pieces of evidence: greater speed improvement after sleep, EEG correlations with improvement, and reports of the task feeling easier. These behavioral and physiological data support consolidation during sleep. The Borrect answer, choice B, accurately characterizes the evidence as consistent, with reports being less direct. In contrast, choice A exaggerates by claiming sleep as the only factor, which the evidence does not exclusively prove. Likewise, choice E fails by demanding animal studies, an outside criterion not required for human data.

Question 10

1. The evidence proves that graphene additions will substantially improve cracking resistance in all real-world applications, since fracture toughness increased in the lab.
2. The evidence is not relevant to the claim because fracture-toughness tests and microscopy cannot indicate anything about cracking resistance.
3. The evidence includes direct test results and a proposed mechanism consistent with improved cracking resistance, while also reporting a replication with a smaller improvement and noting processing differences that may affect outcomes. (correct answer)
4. The cost estimate shows that graphene improves cracking resistance, because higher cost implies higher quality materials.
5. The evidence is inadequate because the passage does not report regulatory approval data, which is required before any material property claim can be credited.

Explanation: This question tests your ability to evaluate scientific evidence for a materials engineering claim. When assessing evidence for technical claims, you must consider both supporting results and factors that might limit generalizability. The scientist claims that adding graphene substantially improves a polymer's cracking resistance, citing a 35% increase in fracture toughness in lab tests, microscopy showing more tortuous crack paths (suggesting the proposed mechanism), a replication showing only 10% improvement with different dispersion methods, and cost estimates. The evidence includes direct test results supporting improved cracking resistance and a plausible mechanism, making a reasonable case for the claim. However, the replication's smaller improvement highlights that processing differences (graphene dispersion) can significantly affect outcomes, suggesting the improvement may not be consistent across all implementations. The Correct answer (C) captures both the supportive evidence and the processing-dependent variability. Answer choice A overstates by claiming the evidence proves substantial improvement in all applications, while choice B incorrectly dismisses fracture toughness tests as irrelevant when they directly measure cracking resistance.

Question 11

1. The evidence proves that handwriting is always superior to typing for all kinds of learning, since handwritten students scored higher on the delayed test.
2. The evidence is irrelevant because differences in note content cannot be connected to learning outcomes.
3. The evidence supports an association between handwriting and better conceptual performance and suggests a possible mechanism (paraphrasing), while also indicating that typing can yield similar results under paraphrasing instructions and noting a potential confound related to internet access. (correct answer)
4. Because typed notes were more verbatim, the passage has already established that typing causes worse conceptual learning, making test results unnecessary.
5. The evidence is inadequate because the studies do not measure brain activity, which is required to distinguish conceptual learning from factual recall.

Explanation: This question tests your ability to evaluate evidence comparing different learning methods. When assessing evidence for educational claims, you must consider both the main findings and potential confounding factors that could influence results. The psychologist claims that handwriting leads to better conceptual learning than typing, citing higher conceptual test scores for handwriters, analysis showing more paraphrasing in handwritten notes versus verbatim transcription in typed notes, similar performance when typists were instructed to paraphrase, and potential internet access for typing students. The evidence supports an association between handwriting and better conceptual performance, with the paraphrasing analysis suggesting a plausible mechanism for this advantage. The lab experiment strengthens this by showing that typing with paraphrasing instructions yields similar results to handwriting, supporting the mechanism. However, the potential internet access for typing students represents a significant confound that could explain performance differences through distraction rather than note-taking method. The Correct answer (C) acknowledges both the supportive evidence with its proposed mechanism and the important confound. Answer choice A overstates by claiming the evidence proves handwriting is always superior, while choice B incorrectly dismisses the connection between note content and learning outcomes.

Question 12

1. The evidence conclusively shows that the tax alone reduced sugar consumption, because SSB sales fell and water sales rose after the tax.
2. The evidence is mostly irrelevant since it measures beverage purchases rather than directly measuring sugar consumption.
3. The evidence suggests an association between the tax and reduced SSB purchasing beyond the trend in a nearby city, but it also indicates potential substitution to other sugary drinks and a concurrent campaign that could affect consumption. (correct answer)
4. Because City N's purchases also decreased, the passage proves that taxes cannot influence sugar consumption.
5. The evidence is insufficient because only a multi-country longitudinal trial can establish whether beverage taxes reduce sugar consumption.

Explanation: This question tests your ability to evaluate evidence for a public health intervention's effectiveness. When evaluating evidence for policy claims, you must consider both the primary effects and potential confounding factors or unintended consequences. The researcher claims that a beverage tax reduces overall sugar consumption, citing decreased SSB purchases, increased water purchases, survey data showing SSB reduction but increased fruit juice consumption, a smaller decrease in a neighboring city without the tax, and a concurrent media campaign. The evidence suggests an association between the tax and reduced SSB purchasing that exceeds the trend in the control city, supporting the claim's direction. However, the substitution to fruit juice (which also contains sugar) complicates the claim about overall sugar consumption, and the concurrent media campaign represents a confounding factor that could independently influence behavior. The Correct answer (C) recognizes these complexities: the evidence shows promise but includes substitution effects and confounding factors. Answer choice A overstates the evidence by claiming it conclusively shows the tax alone caused the change, while choice B incorrectly dismisses beverage purchases as irrelevant to sugar consumption when they are directly related.

Question 13

1. The evidence definitively establishes authorship, since any stylometric similarity proves that Author S wrote the poem.
2. The evidence is largely irrelevant because it focuses on function words and editorial practices rather than directly naming the author of the poem.
3. The evidence combines statistical similarity, circumstantial documentary context, and thematic parallels that are consistent with Author S's authorship, but none of the cited items directly identifies Author S as the poem's author. (correct answer)
4. Because the journal sometimes published anonymously, the passage demonstrates that the poem must have been written by Author S.
5. The evidence is insufficient because only DNA testing of the manuscript can determine authorship with acceptable certainty.

Explanation: This question tests your ability to evaluate evidence for literary authorship attribution. When evaluating evidence for attribution claims, you must assess whether the evidence directly identifies authorship or merely provides circumstantial support. The scholar claims an anonymous poem was likely written by Author S, citing stylometric similarity in function word usage, a letter mentioning sending verse to the journal (without quoting the poem), the journal's practice of anonymous publication, and thematic similarities to Author S's work. The evidence combines multiple types of support—statistical, documentary, and thematic—that are consistent with Author S's authorship and create a cumulative case. However, none of these pieces directly identifies Author S as the author; they are all circumstantial, requiring inference to connect them to the attribution claim. The Correct answer (C) accurately characterizes this evidence as consistent with the claim but indirect. Answer choice A incorrectly suggests that stylometric similarity alone proves authorship, while choice B dismisses relevant evidence as irrelevant simply because it doesn't directly name the author.