Which challenges have the Andean and midlatitude countries faced since gaining independence? Choose all answers that are correct.

recent takeovers by nondemocratic governments

harsh rule by military leaders

extreme gaps between the rich and the poor

difficulty in controlling and developing resources

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."