Question

Muscles can only pull. Movement of limbs is possible because muscles pull bones. For
example, you can fold and straighten your arm at the elbow because the bones are
pulled by muscles.
For this movement at the elbow
A. at least two muscles are needed
B. many strong muscles are needed
c. two muscles should be joined together
D. the muscles should be longer than the bone​

Answer 1

Answer:

the answer is B

Explanation:

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