GRE Vocabulary Builder

Answer: Choice (D) is correct.

In the first half of the analogy, someone who is stolid is emotionless and unresponsive, not demonstrative and expressive. So, look for the answer pair that contains antonyms. In choice (A), something that is indeterminate is imprecise, vague, and uncertain, so eliminate that choice. In choice (B), someone who is mutinous is rebellious and insubordinate, so eliminate that choice. In choice (C), someone who is pensive is contemplative and thoughtful, so eliminate that choice. In choice (D), refulgent describes something that is brilliant and gleaming, not dull, so that is the correct answer.