Choose the most appropriate antonym of the underlined word.
Zakir is a fearless and impetuous fighter. a former Guantanamo prisoner who earned a reputation for brutality on the battlefield.
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Correct answer: D
Explanation
The correct answer is option 4 i.e. cautious.
"Impetuous" means acting quickly without thinking, often in a reckless manner. "Cautious" refers to being careful and avoiding risks, which is the opposite of impetuous behavior.
The other options don't convey this opposite meaning:
Eager means enthusiastic or ready, but it doesn't imply caution.
Fierce refers to being strong or intense, not the opposite of impetuous.
Restive means uneasy or restless, which is also not the opposite of impetuous