Question

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

Answer 1

Answer is option B. Relaxes

Answer 2

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