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3 votes
To raise an arm upward, the muscle on one side of it contracts.

What happens to the muscle on the opposite side of the arm?

a
contracts
b
relaxes
c
both contracts and relaxes
d
neither contracts nor relaxes

User Qiangks
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2 Answers

2 votes
Answer is option B. Relaxes
User Patrick Lightbody
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1 vote

Answer:

relaxes

Step-by-step explanation:

when we lift our arm, muscle on the one side of the arm contracts while other side's muscle relaxes

User Rpgmaker
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