Pls answer quick pls :)

a.

explanation:

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !