Allison has written and rewritten the central idea of her speech on the topic of dog care. She finally comes up with "Dog care is very difficult." What is the problem with this central idea?A) Her central idea is not audience-centered.
B) Her central idea is too confusing.
C) Her central idea is too vague and does not restrain the number of main points.
D) Her central idea is not a declarative sentence.

C) Her central idea is too vague and does not restrain the number of main points.

Explanation:

The statement "Dog care is very difficult" is very vague, because it is using an adjective that is very general, and can be interpreted or comprehended in many different ways.

Allison should instead try to narrow down her central idea. She could say that "Dog care is very difficult because of ", or she could also use a more specific adjective accompanied by a supporting phrase like "Dog care is very expensive, costs are soaring"