If tom is losing muscle size since he took a break from exercise while he was sick, which exercise principle explains this? a)the muscle adaptation principle b)the exercise specificity principle c)the law of reversibility d)the overload principle

I believe the Answer is D. the overload principle

The answer is C) The law of reversibility.  This states that lack of exercise may have an adverse affect of exercise, which means you get weaker when you don't exercise.  This is the main reason why people have to go through so much physical therapy after an injury.

More than 600. i'm just guessing