A predicate nominative is a word or word group that is in the predicate and that identifies the subject or refers to it. A predicate nominative appears only in a sentence that has a linking verb. Common linking verbs include is, was, will be, has been, and could have been.
It is C.
Volunteer is a predicate nominative.
<em>Hope this helps!</em>
That really depends on the scene. Can you edit your question and then send a message to be to answer it? I could maybe see an attachment and or you could type the stanza you're having trouble with, and I could take a look at it for you. Send a message to me. Hope I helped a little! Bye!