(100 POINTS SINCE I NEED THIS SO BAD) can u describe these coastal regions for me please
Baja California
the Pacific Coastal Lowlands
the Mexican Plateau
the Sierra Madre Oriental,

look at my profile i got the answer for that i did that

i think it is the third one.

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."