If the person isn't candid, it indicates he has subtlety in his speech and nuances or implications in word meanings.

The key word here is “dishonesty,” for this is the most specific that we can get about Laura’s sickness. There is nothing in the sentence to indicate anything about the specific nature of her ailment. Given that she was fired for dishonesty, the illness must have been a complete story that she made up. Hence, it is best called a “fabrication.” Something “fabricated” is strictly speaking something “manufactured.” When this is applied to human actions, a “fabrication” takes on the additional implication of intention to deceive.

The key word, of course, is “worn,” but you must be careful not consult any knowledge that you might have concerning tea party ceremonies. The sentence itself implies nothing specific about what exquisite items are worn by the participants; therefore, the best option is “garb,” which generally means “clothing,” though often implying that said clothing has a special use. This latter point makes the word even more appropriate for the sentence, though it is really the very general nature of “garb” that makes it more appropriate than any of the specific options.

Since Jeremiah detects injustices being done by those who are in power, the best description for his declarations would be “grievances.” A “grievance” is a reason that one has (perhaps completely in imagination, though perhaps also truly) for registering a complaint for being wronged or “aggrieved.”

The opposition between the two sentences is between activity and something else. This can be detected by the parallel construction that speaks of one thing (“on the one hand”) breaking down the body and another (“on the other hand”) breaking down the soul; therefore, the best choice for an opposite to “activity” is “idleness.”

The key expression is the participial clause “feeling a perpetual state of sadness and depression.” While Isaac might be described in terms of any of the options given for this sentence, this phrase clearly indicates that he was saddened. When someone experience “melancholy,” he or she is sad and thoughtful. The word comes from the old theories of the “humors” (or blood chemicals) that were believed to influence psychological dispositions. Melancholy was believed to be derived from too much “black bile.” Someone who was bad-tempered was called “choleric” or “bilious”—a surprising but understandable relation, given the connection to bile. The word “cholesterol,” literally means “stiff bile” (though that is an inadequate medical definition, of course).

The implication in the sentence is that Elaine’s diet was based on the principle of picking the “middle road” in consumption—not too much, not too little. Such a plan is one of “moderation,” meaning one of “avoiding extremes.” It is related to words pertaining to the “middle,” and we can see rather direct relatives in words like “moderator”—a person who is supposed to enable two (or more) opposing parties to discuss some matter by means of this “middle party.”

The key word for the opposition expressed here is “reasonable.” The best option must mean “unreasonable” and not merely something like “crazy” (as do many of the options). While the word “irrational” is often used to describe someone who is angry or uncontrolled, it primarily means “acting without reason” or (even more directly) “not rational.” The latter sense is directly evident when you see the “ir-” prefix, which here means “not,” and the base of the word “rational.”

We know that the swimmer "discovered she had a fear of heights" at the top of the tall diving board, so we can infer that we need to pick out a word that describes an emotion and means something like "fear." While "rage," "ennui," "eagerness," and "trepidation" all describe emotions, only "trepidation" ("a feeling of fear or agitation about something that may happen") fits the context of the sentence. So, "trepidation" is the correct answer.

The key expression here is “unsaid premises.” The thing that is believed to have been revealed would be such premises, which would be called “presuppositions.” The word literally means “things supposed before (something else).” Often, such things often are not spoken and are merely presumed without much reflection.