How did the American Revolution affect thousands of Loyalists? They built smaller homes.
They had larger families.
They moved to Canada or Britain to start over.
They went into business with their enemies.

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; allows decision to stand;

answer; reincarnation of an eternal soul;