Question

From the options given below, identify the sentence consisting of a compound adjective formed by joining an adverb and a past participle:

• A. She is a good-looking girl.
• B. This is a smoke-free restaurant.
• C. It was a last-minute decision.
• D. We live in a densely-populated city.

Answer 1

Answer: (D)

We live in a densely-populated city.

A compound adjective is formed when two or more adjectives are joined together to modify the same noun. An adverb is a word or phrase that modifies the meaning of an adjective, verb, or other adverb, expressing manner, place, time, or degree. When adverb is used before an adjective -ly is usually added to the end. Whereas the past participle is the form of a verb, typically ending in -ed in English, which is used in forming perfect and passive tenses and sometimes as an adjective

Options A, B, and C all are compound adjectives but they don't meet the requirements stated in the question.

Option D: "densely-populated"- compound adjective; "densely"-adverb; "populated"-past participle

Option D is the correct answer.