she has anger issues and/or he cheated on her and/or she is anger
Explanation:
Extraneous details are remarks or information contained in someone's writing that is not pertinent or relevant to the meaning or purpose of the content.
Examples of extraneous details in writing are when a writer spends too much time on certain topic or piece of information, than the paper needs. Another example is when writers describe some object for the object's sake. The details are too much and it does not add to the writing, and does not seem to be relevant.
The correct answer is C. His antislavery speech, where he singled out Senator Butler of South Carolina. Because Sumner singled out Senator Butler, Representative Brooks, who was Butler's distant cousin, decided to kill Sumner, which he almost did.