Everytime your cousin Lupita comes visit, she has to ring the doorbell 10 times, even if she sees you walking toward the door to answer. Which following mental disorder does this behaviour describe?

A. Schizophrenia
B. Generalized anxiety disorder
C. Obsessive- compulsive disorder
D. Depression

C. Obsessive- compulsive disorder

The behavior you described of ringing the doorbell 10 times, even when Lupita sees you walking towards the door, is consistent with obsessive-compulsive disorder (OCD). Therefore, the correct answer is C. Obsessive-compulsive disorder.

To determine which mental disorder best describes this behavior, let's analyze each option:

A. Schizophrenia: Schizophrenia is a mental disorder characterized by a range of symptoms, including hallucinations, delusions, disorganized thinking, and social withdrawal. None of these symptoms align with the behavior described, so we can rule out schizophrenia.

B. Generalized anxiety disorder: Generalized anxiety disorder is a mental disorder involving excessive and persistent worrying or anxiety about various aspects of life. Although this behavior may cause anxiety for others, it does not directly correspond to the symptoms of generalized anxiety disorder. Therefore, we can eliminate this option as well.

C. Obsessive-compulsive disorder (OCD): OCD is a mental disorder characterized by recurring, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions). The behavior described, specifically repeatedly ringing the doorbell 10 times, aligns with the repetitive behavior component of OCD. Therefore, this is a plausible option.

D. Depression: Depression is a mental disorder characterized by persistent feelings of sadness, loss of interest or pleasure, changes in appetite or sleep patterns, and low energy levels. While depression may manifest in various ways, the behavior mentioned does not directly align with the typical symptoms of depression. Thus, we can rule out depression as well.

Having analyzed the options, the best answer is C. Obsessive-compulsive disorder (OCD), which involves repetitive behaviors like ringing the doorbell a specific number of times, even if the person knows someone is already approaching the door. It is important to note, however, that a formal diagnosis should be made by a qualified healthcare professional based on a comprehensive evaluation of the individual's symptoms.