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.
The best answer for this question would be:
Alvarez grappled with the issue of writing a novel about a dangerous subject.
A central idea focuses on the dominant impression of a story in which a general truth of the story is found within it.
(C) Neither Jane nor Henry
Neither Jane nor Henry has learned Spanish.
Answer:
Casca attacked first.
Explanation:
Casca first stabbed and then the rest followed to end Julius Caesar.