According to nobel prize-winning economist gary becker, criminals engage in a(n of crime.

your answer should be c, it seems to be the only one that makes sense. mark me branliest : )

what is the tax base for the sales tax?

it should be (usually ) 6%

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."