Final answer:
When collective nouns are not clearly singular or plural, it is recommended to use them as both singular and plural nouns. Collective nouns can take a singular or plural verb depending on the context.
Step-by-step explanation:
When collective nouns are not clearly singular or plural, it is recommended to use them as both singular and plural nouns. Collective nouns such as audience, band, class, crowd, family, group, or team can take a singular or plural verb depending on the context. When the group acts as a single unit, use a singular verb. When the group members act individually, use a plural verb or add the word 'members' for clarity.