I believe it is C
B makes no sense to me because neither is going to be eliminated to my knowledge
A is wrong because they both sever you no mater age
Answer:
The best exercises for improving cardiovascular endurance are activities that elevate your heart rate and keep it elevated for a sustained period of time. According to the American College of Sports Medicine, these activities include fast-paced walking, running, cycling, swimming, cross-country skiing, jumping rope and in-line skating. By elevating your heart rate with exercise, you strengthen your heart, improve blood flow, burn fat and improve your body's ability to deliver oxygen and energy to working muscles. These are the hallmarks of cardiovascular endurance.
