Query about Question 11 from "(I'm Overwhelmed) Vocab Progress Quiz #14b" [8107]

https://www.gregmat.com/quizzes/quiz/im-overwhelmed-vocab-progress-quiz-14b (Question 11)


You literally defined the word “Trenchant” as witty and articulate, so why is this not the answer?

Sharp also fits but it’s not the definition you provided.