If it were me, I'd pay attention to the speaker's gestures and facial expression. It's not in here, but I'd also include the tone of their voice.
Explanation:
Imagine, if you were listening to someone give a speech and they stood there with no emotion or movement, you're most likely not going to pay much attention to that person. In order to get the audience involved, it's best if the speaker gives some kind of gestures and feelings to get a response from the crowd. Make sense?
