Which endocrine gland is responsible for controlling the stress response?
a. adrenal gland
b. pineal gland
c. thyroid gland
d. thymus gland

I'm going with the Thyroid Gland.

Thyroid gland is a two-lobed endocrine gland, located at the base of the neck that secretes two hormones that regulate the rates of metabolism, growth, and development. 

Hope this helps :)

Cotton with iron probably

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)