Take a few steps and look slightly above your audience.
Explanation:
Raise your pitch and hug your body would make the speech uncomfortable for the speaker and the audience so this advice would not be given. Yawn and tightening your jaw stops the speaker from giving their speech so that's not the answer. Take a few steps and stare at the floor makes your speech muffled and also awkward so that's not the answer either. Therefor it must be,, take a few steps and look slightly above your audience.
