Someone whose main function in a group discussion is to contribute and debate ideas is called a

facilitator

recorder

timekeeper

participant

participant

Explanation: someone whose main function in a group discussion is to contribute and debate ideas is called a participant. A participant is a person who becomes involved or takes part in an activity, in this case, group discussion. The facilitator does not take part in the group discussion, he or she only manages the flow of information. The recorder takes notes of what the group talks about.

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