Answer:
C
Explanation: This is the only answer that explains exactly what the essay is about. A and D only talk about one branch, not all three. If you use A or D as a topic sentence the reader will think the essay is only about one branch. B talks about the different names of the federal government , not the branches themselves which may lead the reader to think that the essay is about the different names of the federal government.
Answer:
5 it just like a paragraph
Writers should include references to their research in an argument because it adds credibility to the argument to the argument they wish to prove.