The word in the sentence that is used as a predicate nominative is option c. Award. A predicate nominative is a complement of the subject and is generally followed by linking verbs such as is, are, was, were. A predicate nominative is always in a pronoun or noun form because they describe or rename the subject.
That it is super frikin weird
Banquo knows that Macbeth will not remain king because of the prophecy told by the three witches at the beginning of the play. Banquo will get kings yet not be one. Banquo's decedents will be kings but not he himself.