Scout says she doesn't mind being a ham for the performance, but the costume is not comfortable. Scout lists the many discomforts of her costume saying, "it was hot, it was a close fit; if my nose itched I couldn’t scratch, and once inside I could not get out of it alone." We know Scout wants to be as independent as possible, so her needing help to take off the costume is a major problem for her. This also hints that there may be a situation in which Scout's costume becomes problematic because she can't get out of it along. This literary device is foreshadowing - it's showing that some trouble might befall Scout because she can't get out of the ham costume.
The best answer here is your fourth one, they only present facts regarding a topic. When writing for information, as the author you want to ensure your readers are being presented with correct information. To do this, you must research before placing your information into whatever it is you're writing. When you do this, you don't want to give your readers incorrect information. Thus, your writing must be based on provable facts.
The other three options are all things that are included in other types of writing as well as informative writing, which is why they are not the best answer here.
The answer is c because they were the people that were in charge of the concentration camps