Supporting sentences in an essay should

AGenerally be the last sentence in each paragraph.
BBe supported by at least three pieces of evidence.
CProvide information that support the topic sentence.
DInticate to the reader that the essay is an informal essay

Verified Answer :

C. Provide information that support the topic sentence.
Because supporting sentences give facts about the main sentence

I would go with:
B. Be supported by at least three pieces of evidence