Answer:
plural
Explanation:
A compound subject in one which two or more than two of the individual noun phrases are then coordinated to form a single and a longer noun phrase. In other words, a compound subject contains more than one subject or predicate.
The usage of a compound subject is somewhat complicating. Whenever there is more than one subject in a sentence and the subjects are connected by a conjunction such as 'and', the verb used is always a plural verb.
