Increasing heart rate, blood flow to muscles, body temperature and increasing fluid around joints are benefits of a cool-down
O intense exercise
O warm-up
static stretch

C

Explanation:

When your heart rate speeds up, you usually get hotter and start sweating, when you are exercising. This might take hours for you to realize because it happens so slowly. Fluid flows and your bloodstream goes a lot smoother, which can help lower the chances of blood clots. This is all because of a warm-up.

b and d are your answers i just answered this question