GRE Vocabulary Builder

Answer: Choice (D) is correct.

Something that is exorbitant is unreasonably costly, so the two words in the first half of the analogy are antonyms. Choice (A) is incorrect, because stringent and rigorous are synonyms that mean strict and inflexible. Choice (B) is incorrect because someone who is querulous is argumentative. Choice (C) is incorrect because the words preternatural and miraculous are synonyms that mean supernatural. In choice (D), multifarious means varied or assorted, and homogeneous means uniform and consistent. These words are antonyms, so choice (D) is correct.