Juan's family moved from Mexico to live in America. This is an example of what? 1:migration
2immigration
3:internal migration
4: Exportation

answer without file pl​

b

Explanation:

is there a year set? the question is incomplete

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."