It's an internal conflict because Sarah has to decide whether or not to confront her friend. Internal conflicts take place in a person's mind. It shows conflicts of the character with her own self. In these text, Sarah's mind is conflicted whether to confront Connie or not.
As a noun, a harangue is a long, aggressive speech.
As a verb, to harangue is to teach someone in an aggressive, unfriendly manner.
The answer that best fits this description is B. to give a pompous speech to.
Answer:D
Explanation: Because she needs three sources, and the librarian can help her with that