Professor Cavanaugh participates in the university committee on academic integrity. He personally does not agree with the other committee members' plan to begin accepting students with grades below a 2.5 GPA. Professor Cavanaugh is most likely, however, to vote in favor of their plan if:

the answer is a wheel

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."

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.