Answer:
Can you send the pic of the passage that this question is related to ?
A, the author wants us to introduce us to the character and events that will cause the conflict.
Assuming you meant explanatory text and not exclamation text, the answer would be brackets. For example, say your quotation is "She wrote the book." If you are quoting this directly in a paper, you want your audience to know who "she" is. So, you use brackets, and write the following: "[J.K. Rowling] wrote the book." Hope this helps.
I'd make up a lie on how I have a school work project that I'm doing to help someone.