For this question, some simple attention to the parts of the word "irrational" will help you get quickly to the correct answer. The prefix "ir-" is a form of the prefix "i-", which means "not." Think of the word "incorrect." In this word, "in-" means "not"—as in "not correct." Therefore, someone who is "irrational" is not rational. Now, "rational" means reasonable or able to use one's mind clearly. An irrational person does not think clearly. We tend to think of angry people as being irrational, but really anyone who is illogical is irrational. The simple word "unreasonable" is an acceptable synonym for "irrational"—indeed, it is almost an exact copy of the parts of the word. The prefix "un-" is used to mean "not," so "unreasonable" means "not reasonable"—quite close to "ir + rational"!

The prefix "in-" here means inside, so the word “interior” means having to do with or located inside of something, making "inside" the correct answer.

The prefix or root word "port-" means related to moving or transporting, so a “porter” is another name for a “doorman.” For example, the person who collects your bags and holds the door for you at a hotel is considered a "porter." To provide further help, a “protector” is someone who defends someone else.

A “conjunction” is something that joins words together, a connection. The root "junct" means joining, as in “junction.” To provide further help, “enamor” means love; “mar” means ruin; “novelty” means newness or originality.

"Allegiance," meaning devotion or loyalty to a person, group, or cause, comes from the same root as the words "ally" and "allied." An "ally" is a person on your side of an argument or war. "Devotion" and "loyalty" also describe dedication.

The word "admire" is perhaps so common that you will at first trick yourself into choosing the wrong answer. The word comes from Latin roots that are related to the word "miracle" and "miraculous." Miracles and miraculous things are things that arouse wonder, for they are unexpected and marvelous. When we "admire" someone, we find that person to be wonderful or out of the ordinary. This sense of marvel and wonder leads us to have respect for the person. Therefore, while we can perhaps say that admiration is more than mere respect, still among the answers provided, this is the best option for a synonym.

The word "persist" comes from root words in Latin that mean to stand thoroughly, to the end. To "persist" is to remain steadfast and devoted to something—not giving up but instead continuing. A "persistent" cold is one that remains for a long time, and a "persistent" person is someone who never gives up. The word "persist" can be used as a verb to indicate that something continues on, as when "the cold weather persisted for weeks," meaning that it continued or endured for weeks. (To "endure" can mean to continue existing.) Therefore, the best option among those provided is "endure." Note, however, that "to persist" does not necessarily mean "to devote." "To devote" time to something might be a way of persisting, but the two words do not exactly indicate the same thing.

"Negligent" is an adjective that means "failing to take proper care in doing something. While "negative" might look like a potentially good answer because both "negligent" and "negative" begin with the root word "neg-" which means "no," "not," or "deny," "negative" does not mean the same thing as "negligent," so it cannot be the correct answer. "Irresponsible," however, is an adjective that is used of a person, attitude, or action and means "not showing a proper sense of responsability." Because "irresponsible" is the answer choice closest in meaning to "negligent," it is the correct answer.

The word "apprehend" comes from the Latin for to lay ahold of. When we "com-prehend" something, we understand it thoroughly—we grasp it thoroughly. The word "apprehend" is often used when we talk about capturing a criminal. The police "apprehend" a wrongdoer, meaning that they capture, seize, or catch him or her. Therefore, the best answer among those provided is "catch."

The word "annihilate" literally means "to make into nothing." The "-nihil-" portion of the word comes from the Latin for "nothing." "Annihilation" is complete destruction, and "to annihilate" is to bring about such complete destruction. Although bombing, battering, and attacking might be means to bringing it about, only the word "obliterate" is a good synonym for complete destruction. The word "obliterate" means "to utterly destroy" and literally means "to erase like letters from a paper." To "obliterate" a city is to "wipe it out from existence."