GRE questions are generally presented from easiest to hardest. When you reach the hard part of the analogy section, keep the following trick in mind: Eliminate any answer-choice that reminds you (however vaguely) of the original pair. Eye-catchers, or answer choices that quickly remind you of the original pair, are sometimes the answer to easy problems; rarely are they the answer to medium problems; and virtually never are they the answer to hard problems.

Think about how this would play out in a real scenario. An average student guesses on a hard problem and chooses an answer that reminds him of the original pair. If the eye-catcher were the answer, the average student would answer correctly — therefore it would not be a hard problem.