Which product does Venezuela provide at a reduced cost to Cuba? oil
fish
wheat
sugar cane

Oil

Explanation:

Venezuela provides Cuba with a reduced cost on oil. The reason being is because it has to be exported from Venezuela to Cuba, while "fish", "wheat", and "sugar cane" can all be grown and produced in Cuba already.

fir trees are found in areas with cooler climates. fir trees have needles for leaves and remain green year-round.

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."