What is an effective way to make a meaningful contribution to a group discussion? demand to lead the discussionignore the other group members and work alonerespond appropriately to questionsask politely to be excused

AN effective way to make a meaningful contribution to a group discussion is to C. respond appropriately to questions.

In a group discussion, you should be polite, respectful, and participate. Demanding to lead and ignoring other group members is disrespectful, and asking to leave isn't participating.
A group discussion is about listening to others opinions and respectfully sharing your own.