Answer:
they are more likely to be anxious, withdrawn and unhappy
The first step is realizing that you have a problem.
This step seems simple, but it's sometimes hard to admit. You can't help somebody that doesn't want to be helped.
I think it is natural selection. genetic variation also could be a factor for physical variation over the years.
I would say B, as both A and D are obviously incorrect and stress can be a natural part of life as long as it does not dominate you.
D. its release is stimulated by the pituitary gland.
