Answer: I would contend that the right answer is the E) "... since they provide fascinating evidence about the creative processes in which this great Modernist engaged."
Explanation: Just to elaborate a little bit on the answer, it can be added that the other options feature sentences that end with a preposition ("engaged in"), and although this is permissible in the English language, it is not the most formal option. In the example, a good way to correct it is to replace it by "in which." I would suggest changing the sentence so it reads "Although the author himself declared them unpublishable, the first appearance in print of 40 poems by T.S. Eliot is a significant event, since they provide fascinating evidence about the creative processes in which this great Modernist engaged."
The correct answer is D. An informal writing style
Answer: 100 A+ 4
90 A- 3.5
89 B+ 3.5
88 B+ 3.5
87 B+ 3
So the answer would be a B+, which to me is a very good grade...
Hope this helps....... Stay safe and have a Merry Christmas!!!!!!!!! :D
Id say the last one historical fiction takes place in history and has a real place