Explanation
In this vocabulary item, Adroit is the closest synonym of Dexterous, so option B is correct. The word Dexterous and the word Adroit share the same central sense in the context tested by the question, although usage, tone and grammatical form should still be checked before substituting one for the other. A synonym is not required to be identical in every possible sentence; it must preserve the intended meaning in the relevant context. Here, replacing Dexterous with Adroit keeps the core idea intact without reversing the tone or changing the action, quality or state expressed by the target word. The alternatives Exonerate, Treasure and Praise do not express the same central meaning as Dexterous. This distinction matters because competitive examinations often place one accurate synonym beside three familiar but contextually unsuitable words. To verify Dexterous independently, identify its part of speech, state a short definition, and place both Dexterous and Adroit in the same simple sentence. If the sentence retains its essential meaning and grammatical structure, the synonym relationship is supported. Learners should revise Dexterous together with Adroit, a brief usage cue and the contrasting distractors.