Sierra is constantly worried that everyone whom she comes in contact with is full of germs, so she is constantly rushing off to wash her hands. Sierra may suffer from which psychological disorder?
A) clinical depression
B) obsessive-compulsive disorder
C) social phobia
D) paranoid schizophrenia
Answer: B
Rationale: Obsessive–compulsive disorder (OCD) is a disorder characterized by unwanted, inappropriate, and persistent thoughts (obsessions); repetitive stereotyped behaviors (compulsions); or a combination of the two.
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