Robert has had persistent anxiety for about 13 months. He has also suffered from shakiness, feeling "keyed up," insomnia, irritability, and chronic muscle tension. He is best diagnosed as having a(n) disorder.
Group of answer choices:
A) panic
B) phobic
C) generalized anxiety
D) obsessive-compulsive

C) generalized anxiety            

Explanation:

In abnormal psychology, generalized anxiety disorder or GAD is described as an anxiety disorder in which an individual deals with excessive and persistent worry related to a various number of distinct things. An individual who is dealing with GAD might be able to anticipate disaster and he or she can be excessively concerned about work, money, family, health, etc. However, the person who is diagnosed with GAD finds it problematic to control his or her worry and anxiety.

If an individual experience constant anxiety at least six months or more then he or she will be diagnosed with GAD.

Causes: Family history, childhood abuse, etc.

According to the question, Robert is best diagnosed as having a generalized anxiety disorder.