B would be the best answer from the choices shown above
Answer:
B. exercise tubing
Explanation:
It is the most portable & reliable source of a full body workout equipment.
Long term fitness goal. Hence the "desire to be able to run an eight minute mile"
The answer is 2000 calories. My guess is that is because you need to burn so many but gain so many to get energy. This is a way to not gain weight.