Consider the hypothetical example of Dominion Island that has firms producing only two goods, gold and cotton, the proceeds of which it uses to purchase other goods and services from neighbouring islands through its banks. Assuming
that all other required institutions in an economy are prevalent in this island, discuss the circular flow of income and
spending in Dominion Island No diagram is required.

uhh idk for sure but i think it makes it difficult to pump the oil through the oil rigs

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."

b because thats the naswer i got