Why did Nixon insist on arming and training the South Vietnamese army? A
to give them the power to fight on their own

B
to satisfy a request from President Johnson

C
to protect Vietnamese civilians from the Viet Cong

D
to help peacefully reunify North and South Vietnam

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."

i think it's the cabinet

answer; the parasympathetic nervous system;

answer; does not include a reference to the audience;