Answer:
Answer is D. All of the above
Explanation:
Answer is D because in all of examples we have two or more people who are participating in the conversation.
In the first example (A) there are three of them, although there is only one moderator.
B also mentions the conversation of two people. So, it means there is dynamic between them.
Of course, the same goes for C because there are a lot people who are doing something, in this case in similar way.
