Select the pair that best expresses a relationship similar to that expressed in the original pair:
AMELIORATE : WORSEN
Correct: A
AMELIORATE means to make something better or more tolerable, while WORSEN means to make something worse. They are antonyms, representing opposite effects. Similarly, MITIGATE means to make less severe, serious, or painful, and INTENSIFY means to make or become more intense. Thus, Mitigate and Intensify are antonyms, representing opposite effects. Propitiate is to appease, Annoy is to irritate, which are not direct opposites. Palpable and tangible are synonyms. Abstruse and obscure are synonyms.