Predicate nominative is also popularly known as the predicate noun. It is a noun, a pronoun or any nominal that follows the linking verb and most of the time the form of the verb be. It links or completes the linking and change the name of the subject. It complements or completes the verb in the sentence. However, predicate nominative completes only linking verbs. Predicate nominative can be compound while some do not have one. Therefore in the sentence "Sugar is the main ingredient in taffy", the predicate nominative is "ingredient".
The correct option is C.
The novel, 'The Note of a a Native Son was a non fictional work, this is because the author actually wrote about an event that is real, an event that really happened. A fictional work refers to a story that is a result of the author's imagination, that is, the story did not occur in real life, the author only imagines it. Then novel, 'The Notes of a Native Son is a story that convey real information although it made use of elements of story telling.
Ready is the predicate adjective. It describes the predicate, which is looks. The answer is D.