How does Ms. Chen act as a moderator in this part of the transcript?

She reminds the group of the discussion rules and asks them to use a respectful tone.
She helps the group handle a conflict between two or more of the participants.
She provides several topics as possible options for the group to discuss.
She asks the participants to clarify their viewpoints and introduce supporting facts.

She reminds the group of the discussion rules and asks them to use a respectful tone.