Each of the following can be used to make a story more memorable except A. character.
B. dialogue.
C. a setting.
D. all are correct

D

Explanation:

the correct answer is A B and C which makes it D

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."