I believe it is D, if not then C, but I am leaning more towards D. Hope this helps! Sorry if it doesn't! :)
When a person presents a message in a formal manner, he or she is engaging in public communication.
When you are speaking to a larger audience, usually you are going to talk in a formal manner.
No specific paragraph but it’s usually the middle of the story. Because it’s the highest/most dramatic part of the story. The story leads up to this part
