Known for her ______ wit and incisive critiques, the columnist rarely minced words, often challenging popular opinions with fearless conviction.

✓ Correct Answer: Option B

The context describes sharp, insightful critiques and fearless conviction. 'Trenchant' means keen or incisive, often referring to a forceful and effective wit or criticism. 'Acrimonious' implies bitterness, which is too negative.