In which sentence does the adverb clause modify an adjective?

A. I recognized as many flags as he.

B. There are specific rules to know before you display the American flag.

C. Although the flag should always be raised quickly, it should be lowered slowly.

D. The veteran appeared proud as he saluted the flag.

Answer: In sentence D. The veteran appeared proud as he saluted the flag, the adverb clause modifies an adjective.

Explanation: An adverb clause is a dependent clause that functions as an adverb. It cannot stand alone as a sentence because it does not express a full thought. Furthermore, an adverb clause can be used to describe an adjective, a verb or another adverb. For example, in sentence D., the adverb clause is "as he saluted the flag" since it is being introduced by the subordinating conjunction "as" and it does not express a full idea. Moreover, this clause is modifying an adjective: "proud", which is immediately before it.

The answer is D. The veteran (noun) appeared proud (adverb) saluted the flag (adjective)