Skeleton muscles relay on contractions to move the bone they are attached to so it can contract and relax
You can cool down by sweating, wearing light and breathable fabric such as cotton rather than something heavier, and slow down your metabolism
When you stretch, the muscle fiber is pulled out to its full length sarcomere by sarcomere, and then the connective tissue takes up the remaining slack. When this occurs, it helps to realign any disorganized fibers in the direction of the tension. So the answer is C
