Interest groups and political action committees are both types of organizations that
O write and pass laws at the state and local levels.
O are not part of the government, but can influence the government.
O hold debates and town hall meetings to inform voters on major election-season issues.
O raise unlimited money for political campaigns and candidates.

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."

answer; existed; limited;

answer; mission;

answer; expert witness;