Answer:
In my opinion, the correct answer is clarity. By using the repetition, the author tries to clarify what this problem isn't - by its nature it isn't Negro, Southern, or Northern. And then, he affirms what it is - it is American. Therefore, he says that compartmentalizing this problem is not going to help. People have to understand it for what it really is - everyone's problem, the problem of the nation itself.
Explanation:
Can you provide sentence 4? I may be able to give you an answer.
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Answer:
a man stops to admire woods on a snowy evening but must leave because he has things to do
Explanation: