Explanation
In this vocabulary item, Quick is the closest synonym of Brisk, so option B is correct. The word Brisk and the word Quick 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 Brisk with Quick keeps the core idea intact without reversing the tone or changing the action, quality or state expressed by the target word. The alternatives Wealthy, Condemn and Apt do not express the same central meaning as Brisk. This distinction matters because competitive examinations often place one accurate synonym beside three familiar but contextually unsuitable words. To verify Brisk independently, identify its part of speech, state a short definition, and place both Brisk and Quick in the same simple sentence. If the sentence retains its essential meaning and grammatical structure, the synonym relationship is supported. Learners should revise Brisk together with Quick, a brief usage cue and the contrasting distractors.