Answer:
SIGN: Objective Complement (C)
EMPTY: Predicate Adjective (E)
MUM: Indirect Object (B)
DOG: Direct Object (A)
DISAPPOINTED: Predicate Nominative (D)
Step-by-step explanation:
The direct object is the receiver of the action, while the indirect object is the recipient of the action. The objective complement refers to a noun, adjective or pronoun that names the direct object. The predicate nominative is a noun or pronoun that completes a linking verb like is, are, was, has been, and can be, and renames the subject. Finally, the predicate nominative is an adjective used after a linking verb and modifies the subject.