Her argument was so ____ that even her critics admitted they could not refute it.

Answer and explanation

Correct answer: C. cogent

  1. Step 1: The clause 'could not refute it' shows the argument was powerful and convincing. Step 2. 'Cogent' means clear, logical and persuasive. Answer: cogent. Why not the others: 'tenuous' means weak; 'verbose' means using too many words; 'ambiguous' means open to more than one meaning. None explains why critics could not refute it.

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