Who is the richest woman in the world and why

Alice Walton

Explanation:

Walmart heir Alice Walton is the richest woman in the world for 2020, worth an estimated $54.4 billion—$10 billion more than a year ago.

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."

it should be d or b but i'm sure it's d