How do visual aids most effectively support a speaker's point in a speech? A. By providing information that the speaker doesn't give
B. By allowing the audience to ask questions
C. By showing evidence that represents what the speaker is talking
about
D. By citing the source of the speaker's information

C

Explanation:

Visual aids are normally discussed ruling out A.  They do not in themselves allow questions and the don’t cite sources most of the time.  Hope this helps.

the excerpt from the passage that best states the author's claim is: "why did people keep speaking of equality while profiting from slaves? "

when pierre lemerre the younger said in 1716 that all men were equal, slavery was reaching its crudest peak and either eastern europeans and africans were treated as objects from which powerful landlords could profit.