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In this image, what must the students' muscles do to pull the rope?
A. Twitch and tighten
B.relax and twitch
C. Tighten and contact
D. Contact and relax

In this image what must the students muscles do to pull the rope A Twitch and tighten Brelax and twitch C Tighten and contact D Contact and relax class=

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alinarizwan
The answer is C. Tighten and contact

The muscles wouldn’t relax, so the answer is not B or D. And the muscles wouldn’t twitch, so it isn’t A.
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