The correct answer is C.
The statement "Every person should make it a priority to serve at least two hours per week." is not objective and is not a crucial detail.
The point of the article is that community service is beneficial. However, it is not a fact that serving at least two hours a week is necessary. More or less time devoted to service might be better -- but the author is offering no objective proof to this weekly two-hour requirement.
Therefore, this sentence is the least important sentence in the entire paragraph. It can be deleted without losing any meaning regarding the importance of community service.
A. It explains the conflict and resolution that drive the play’s plot
Readers guide to perodical literature
Here is the answer. The technique that Quindlen used to support the idea <span>that America is less polarized now than it was in past history is VIVID IMAGERY. Hope this answers your question. Have a great day ahead!</span>
17: No error
18: Not
19: Was asked
20: Which