Which historical development led Nehru to promote the policy of unaligned areas?A. expansion of Cold War blocs
B. political pressure from his Parliament to pursue isolationism
C. partitioning of India and Pakistan at independence
D. internal friction between various Indian ethnic groups

aliens arent real sorry bud

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."

answer; the changing age structure of the population;