Answer:
Bi-Polar Disorder
Explanation:
According to the presented conditions, it is possible that Don is suffering from Bi-Polar Disorder. This is because of his dual personality characteristics exhibition in Don’s daily routines. The details also show that he has some kind of illegal income source that is affecting him in some way. He is depressed because he is in some kind of trouble. That’s the reason he is showing various polarities of his personality
He was a very smart man that helped the world in the field of psychology
B ask the client for suggestions to make her more comfortable
When new information or experiences cause you to modify your existing schemes.
They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!