Answer:
questions and answers
dialogue
feedback
Step-by-step explanation:
Audience interaction is when the speaker gives the audience the chance to tell him something back, asking questions or having a dialogue, feedbak is also part of audience interaction because it gives the speaker a sense of what is happening and how he is doing. From the options the only one that doesn´t have anything to do with audience interaction is Body posture since that one depends solely on the speaker.