Is to be a doctor an adjective phrase

I might be wrong but I don't think it is.

no

Explanation:

how to find adjective phrases:

Find an adjective, which is a word that describes a noun or pronoun, in the sentence.

Determine if the adjective is describing a noun or pronoun on its own or in tandem with one or more other words.

If it is working alone, it is just an adjective.

to persuade readers which is answer c

sing because that is what they are doing in the sentence

explanation:

the simple predicate is the main verb in the predicate that tells what the subject does. example: my father fixed the dryer. read each sentence. draw a line under the complete predicate.