The right answer for the question that is being asked and shown above is that: "D. It repeats the word folly to emphasize the mistakes white people have made." the statement that best explains how the use of parallelism in this excerpt supports Baldwin's purpose is that D. It repeats the word folly to emphasize the mistakes white people have made.<span> </span>
Parallelism refers to the construction of sentences by using elements that are grammatically identical in structure, meaning or sound. Authors usually use parallelism in their works in order to draw the readers' attention to the similarity or the differences of ideas by the way they arrange them in the sentence. In the passage given above, Baldwin used parallelism in order to emphasize the things that are important and the things that are not.
If you want to know whether that sentence is punctuated correctly, then you are right - it is. You need to have a comma after the word range, because that is where the dependent clause ends, and there should be no comma before the conjunction and.
