Which of the following sentences uses a predicate adjective?

A) with all the rain, the zoo has been empty
B) The manager of the zoo is Mr. Jones***
C) The seal trainer is she
D) The zoo is one of my favorite places
Is it b?

It’s C

Yes, the correct answer is B) "The manager of the zoo is Mr. Jones." This sentence uses a predicate adjective, as it includes the linking verb "is" followed by the adjective "Mr. Jones" to describe the subject "the manager of the zoo." To identify a predicate adjective, you can look for a linking verb (such as "is," "are," "was," "were," etc.) followed by an adjective that describes or modifies the subject. In this case, "is" is the linking verb and "Mr. Jones" is the predicate adjective.

Is it D?

No.

http://grammar-monster.com/glossary/predicate_adjectives.htm
Study that website before trying again.

"Mr. Jones" and "places" are nouns -- thus, predicate nouns in these sentences. You need to find a predicate ADJECTIVE.