What much your skeletal muscles do in order to move a) engage their fibers slowly b) twitch involuntarily c) separate from the bone d) contract and relax

D: Contract & Relax

Explanation:

It is attached to both the bones on either side of the joint by strong cords called tendons. A tendon is a tough band of connective tissue that connects a muscle to a bone. Tendons are similar to ligaments, except that ligaments join bones to each other. Muscles move the body by contracting against the skeletal.

i think itś the 2nd one because its not anything major like having sex. its putting limits to your self if that makes sense.

hope that and feel free to ask me more questions : )

brainliest? ?

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