It is an important source of fuel for sprints and bouts of high-intensity exercise.
I took the test an got it right! the answer is on 223 of Nancy Clarks sports nutrition guidebook.
More specifically, cardiorespiratory endurance is the level at which your heart, your lungs, and your muscles work together. When we exercise, your muscles need fuel, one of them being oxygen. And it is your heart, lungs and blood vessels that have to provide this to your muscles.
The answer is C for sure no better answer to choose you are welcome ;)
