Which of the following plays a role in determining your body-type? a. bone structure b. metabolism c. body fat distribution d. all of the above.

I think the answer is D) all of the above

D. ALL OF THE ABOVE DEALS WITH BODY TYPE

Can you translate this

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)