I think it's the first option.
Answer:
The conclusion sentence should be "For these reasons, community service should be a requirment for all high school students."
Explanation:
The end of a paragraph is usually wrapping up the whole point using this sentence will wrap up all the ideas the person has concluded.
Hope this helps!
~Brianna/edgumacation
The answer to your question is A- is
The answer is A i just took the test on usa test prep
The answer is the first one, you must always cite your sources, even if you have not directly quoted them. It also adds credibility to your work (this is not the only reason, it is merely an incentive)