Your body needs nutrients to grow and function. what else do nutrients your body do? manage the functions of the respiratory system move oxygen to the cells move fat to the cells decrease the need for water

I would say it's B) help move oxygen to the cells

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.

What are the choices?