SAT Vocab Builder

Answer: Choice (B) is correct.

Someone that is gregarious is convivial. Both of these mean sociable and outgoing. In choice (A), pernicious means harmful or destructive, which is the opposite of innocuous or harmless. These are antonyms, so eliminate choice (A). In choice (C), surreal means bizarre or dreamlike. Mundane means ordinary or commonplace. These are antonyms, so eliminate choice (C). In choice (D), ribald means vulgar or coarse, the opposite of refined, so eliminate that choice. In choice (B), something that is sinuous is serpentine; both of these mean twisting or winding. This is the only answer choice that contains synonyms.