What is the basis of Australian agriculture? * O gold and copper mining
O livestock and crop production

the second one

Explanation:

Australia is the second biggest crop export

i do believe the correct answer is the spread of chinese culture throughout asia and africa.good luck

explanation:

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."