What is one reason why nigerians remain poor despite their country's large oil deposits ?

is there answer choices?

i truly dont know the answer wait i do its 1,3,4

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 region experienced a surplus of food;