The correct answer is (A).
Getting to the Answer: When asked about the function of a phrase, look a few lines before and after to get a sense of what the author is trying to convey to the reader. Here, the author is talking about a memory that he now realizes is inaccurate, so look for an answer that describes the discovery of something deceptive.
(A) Correct: exposing a trick matches the prediction of discovering a deception
(B) Incorrect: the author is not talking about comfort in this part of the passage
(C) Incorrect: the author is describing being uncertain about the truth
(D) Incorrect: betrayed suggests some form of danger, and the phrase indicates a deception, not the truth
Spacing out study makes it stick. Get practice questions emailed to you every day.