Question

During exercise, the amount of ____________ carried in the blood to the muscles increases.
oxygen
carbon dioxide
energy
calories

Answer 1

The answer would be oxygen because the muscles are in need of extra oxygen to be supplied when doing moderate to vigorous workouts.

Answer 2

During exercise, the amount of oxygen carried in the blood to the muscles increases.

What is exercise?

Exercise refers to the activity that requires some physical effort that helps in improving health and fitness.

Blood vessels are dilated to increase the amount of oxygen carried in the blood and the lungs work harder for meeting the body's oxygen demands.

Therefore, A is the correct option.

Learn more about Exercise here:

https://brainly.com/question/13128077

#SPJ2