How are sports different from general forms of exercise?

A. Sport are organizad and require skills
B. Sports requiere the effort one person
C. Sports are not physical activities
D. Sports are not competitive

Sports are organized under a person and require skills which are thought by him

A.) sports are organized and requires skills

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

Administration and victim