12. a doctor completes the study of naturally occurring viruses at harvard university. what type of resource is the doctor? (5 points)
capital
human
natural
none of the above

your answer should be “B.”

MARK ME BRAINLIEST PLEASE

None of the above

Explanation: Capital is the only economic resource and human would not be the correct resource.

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 president uses mass media to gain support for policies;