The prewrite is just planning out how you are going to layout your essay rather then actually writing the product, so you can compare it to the plans rather then building the house.
A, parallelism. There are no questions, little to no emotion in the sentence, nor are there metaphors
Dear Mr/Mrs _____,
I am writing to you about my concern for the noise that is being made in the school, and how it is disrupting me and others’ ability to work.
It would be sincerely appreciated if you could take this issue into regards, and talk to the people concerning the disruption.
Sincerely, _____,
Year ___.
I think the author chose to start the book 19 years before the main events of the story so the reader could absorb things. The author technically wanted the reader(s) to understand something before reading the real story.