When stretching, you should: work on a specific muscle group slowly and at one time always do shoulders and legs first compete with others to see who is more flexible have the same degree of strength in all joints

Ik this is rlly late, but I think that it would be A.

Explanation:

When u do streches, usually you are targeting a specific point of your body, and therefore that makes A true.

Hope this helps :)

the answer is nerve impulses.

good