What must a speaker keep in mind to best appeal to the audience? o a famous speeches the audience may know by heart ob. the expectations and knowledge of the audience o c. the right of the audience to ask questions o d. the length of time the audience has been waiting to hear the speaker

I believe the answer would be B.

Explanation:

If a speaker makes sure to talk about what relates to the audiences expectations and knowledge it will most likely cause higher approval from the audience because it allows them to better understand what the speakers goal in the speech is.

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.