Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

A.He is not eating the correct serving size of food during his meals.
B.He does not have a well-defined goal or self-monitoring habits.
C.His genetics are influencing some of his skill-related fitness components.
D.His teammates are not providing enough support.