Answer:
a sentence with more than one subject or predicate.
Explanation:
The correct answer is A. When the subject of a sentence is singular, add "_s" to the base form.
An easy example is "to exist", the base form is "exist" and A strawberry exists shows that you add s when a singular subject is used.
Answer:
C. The poem's word choice and word order
One good option is tetrameter.
It is most likely to occur in the middle