They are different because the reader is job is to read the text and give it the emotion and excitement and drama. The writer just needs to write a good text make sure it has a good intro and a fitting body that way the conclusion will leave us with a lot of emotions that way the story is phenomenal the reader gives all he can and the writter can be proud of his work.
The best example of a primary source among these options that you've mentioned is an interview with her dad who is a Vietnam veteran. She can get all the details she needs from a person who was actually there.
Hello!
A) the setting is extreme but natural, therefore realistic because places like that can actually exist in the real world. Hope you get it right and sorry for the late answer.
Good luck!
~ Destiny ^_^
Gregg Shapiro's poem "Tattoo" is about his Holocaust surviving father.