Choice (B) is correct. Kaplan students know that when you have two adjectives in the stem pair, that usually signals an extreme bridge-that one word in the stem pair will be an extreme form of the other. Here,
dessicated means extremely
dry. Similarly,
insipid means extremely
bland. So (B) is our answer.
In Choice (A),
irascible means easily angered, not extremely
dangerous. In Choice (C),
lethargic, or slow and lacking in energy, is not extremely
ominous, which means threatening.
Rampant is not extremely
gentle, so eliminate Choice (D). Finally, in Choice (E),
winsome, which means charming, is not extremely
prosaic, or commonplace.