If a car's is malfunctioning, people in the car will become ill when driving long distances, especially if the windows are closed. a. braking system b. air conditioning c. exhaust system d. cooling system

Your answer would be false

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)