Choose the word that is closest in meaning to the underlined word:-

He clinched the deal with his astute understanding of the business.

settled

The correct answer is Option (1) → settled

The completed sentence implies that his understanding of the business helped him successfully finalize or secure the deal.

• Clinched means to confirm or settle (a contract or bargain).

• Settled means to resolve or reach an agreement about (an argument or problem).

• Lost and abandoned are antonyms of clinched.

• Comprehended means understood. While the deal was understood (astute understanding), it was settled (concluded/secured).