Question

an effective moderator of a group discussion
tells participants what they should say.
encourages contention and disorder.
introduces personal opinions into the discussion.
helps the group remember the rules of discussion.

Explanation:

An effective group discussion moderator guides the conversation fairly, keeps it orderly, and ensures rules are followed. They do not dictate speech, encourage chaos, or insert personal opinions, as these undermine the collaborative nature of a group discussion. Instead, they uphold structure by reminding the group of discussion rules.

Answer:

helps the group remember the rules of discussion.