Norby, an 18-year-old college freshman, has missed almost all his classes during the past month. He spends most of his time in his bedroom, frequently not even bothering to get dressed or eat meals. He thinks his whole life has been a failure and blames himself for being a social misfit. Norby is most likely suffering from:a. agoraphobia.
b. an antisocial personality disorder.
c. an obsessive-compulsive disorder.
d. a dissociative disorder.
e. major depressive disorder.

Major depressive disorder

Explanation:

i studied on this, When someone has been consistently stressed intensively for a long period of time, they may start to have a major depressive disorder.

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m