Which statement correctly describes the relationship between bones and muscles?

a. bones can move without aid of muscles.

b. a muscle can both push and pull a bone, causing it to move.

c. moving a bone back and forth requires the action of at least two muscles.

d. a bone needs only one muscle to move it back and forth.

C. Moving a bone back and forth requires the action of at least two muscles.

Explanation:

To move bones in opposite directions muscles must pair up to help move the body part.

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explanation: