How have Japan and the Koreas used technology to adapt to the forces of nature? Responses A. They developed typhoon and volcano eruption warning systems. B. They developed earthquake and tsunami warning systems. C. They developed technologies to stop earthquakes from occurring. D. They developed technology to use volcanoes to provide energy.

sihi

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."