Which describes step three of a muscle contraction?
a. the sarcomere lengthens.
b. the space between sarcomeres increases.
c. actin and myosin are partially overlapped.
d. actin and myosin are completely overlapped.

I think the the best answer for this question would be

D. Actin and myosin are completely overlapped.

Hope this helps:)

it would be rhyolitic hope this

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.