Betsy has had persistent "free floating" anxiety for about 9 months. She finds herself worrying about her children, her career, her marriage, and her friends even though nothing appears to be wrong with any of them. She is best described as suffering from a(n) disorder.

a. panic
b. phobic
c. generalized anxietyd. obsessive-compulsive

c. generalized anxiety      

Explanation:

Generalized anxiety disorder is considered as one of the different mental health disorders in which an individual feels excessive and persistent worry and anxiety about various life-related incidents. This worry and anxiety can last through either six or more than six months. It is also denoted as GAD. A person who is experiencing GAD, can anticipate or feels disaster and might be concerned overly about family, friends, work, money, etc.

Best is suffering from a generalized anxiety disorder in the question above,

they all focused on themes about the inevitability of death.