If you are stiff and too nervous to look at your audience during your speech
raise your pitch and hug your body
yawn and tighten your jaw
take a few steps and stare at the floor
take a few steps and look slightly above your audience

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.

answer; (b); the abolitionist movement;

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."