The Model of a Professional Athlete's Career Shows That When

The model of a professional athlete's career shows that when athletes move from the amateur level to the professional level in a sport like cycling,they

A) focus exclusively on maintaining their overall health and well-being.
B) learn that overconformity to the norms of the sport ethic is deviant.
C) train so intensely that it causes physiological damage to their bodies.
D) avoid using technologies that their competitors don't use.