Which one of the following sentences contains a predicate adjective?

A. What does this hard lesson teach you?

B. We scanned the distant shore for signs of life.

C. The teacher appeared angry when Dave forgot his homework.

D. I brought my lunch for the first time this year.

A predicate adjective is the first adjective which follows a linking verb (used to connect two parts of a sentence). Having that in mind, the correct answer is:

C) The teacher appeared angry when Dave forgot his homework, where appeared is the linking verb, and angry is the predicate adjective.