Some sedimentary rocks are made as a result of the evaporation of lake or ocean water.
select one:
a. chemical
b. fragmental
c. volcanic
d. organic

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."

this is called police cynicism. i hope this .

answer; adjusting and adapting to a culture other than one's own;