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.
The answer is "A" because this one best fits this answer to this question
Answer:
to encourage people to switch service providers
Explanation:
B: president-parliamentary