Respuesta :
The training principles which the statement refer to is : C. overload
The way your body work during a workout is that it will detroy a lot of cells in your body, then your body will rebuild it to become a stronger version of its previous form.
The thing is, when you overdo it, your body does not have the time it needed to rebuild and recover the destroyed the cells, which is the cause of the pain
This statement refers to the SPORT training principle known as overload. The correct answer is C. This person has been exercising too much, so that his body couldn't handle the same exercise anymore and he had to switch it up. There was an overload done to his body, so he has to take it easy for a while so as to let his knee heal properly.Hope this helps. Let me know if you need additional help!