Jack thinks constantly about dirt and germs.He washes his hands hundreds of times a day.Which disorder is most consistent with Jack's behaviour

A)  obsessive-compulsive disorder 
B)  phobic disorder 
C)  somatization disorder 
D)  illness anxiety disorder

Obsessive-Compulsive Disorder

A mental health condition marked by unwanted repetitive thoughts (obsessions) and behaviors (compulsions).

Somatization Disorder

A mental disorder characterized by recurrent, multiple, and current clinical complaints about somatic symptoms without a physical cause.

Illness Anxiety Disorder

A chronic condition characterized by excessive worry about having or developing a serious illness, despite medical reassurance.