With difficulties comes a loss of faith in oneself and humanity.
-Mabel <3
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.
I would say the correct answer is choice D, but I'm not 100% sure.
hope this helps you! :-)
Preface of a textbook states the author's purpose for writing the book.