The correct answer is Obsessive compulsive and Related Disorders.

Rita's behavior of excessively organizing her room and experiencing anxiety and distraction in class is typical of Obsessive-Compulsive Disorder (OCD). OCD is a mental health disorder characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) aimed at reducing anxiety.

Obsessions are unwanted and intrusive thoughts, images, or urges that cause significant distress or anxiety. In Rita's case, her obsession might be the fear of her room being messy or disorganized.

Compulsions are repetitive behaviors or mental acts that an individual feels compelled to perform in an attempt to reduce the anxiety caused by their obsessions. Rita's compulsion might be the need to repeatedly organize her room until it meets her strict standards of perfection.

OCD can significantly impact an individual's daily life, causing them to spend excessive time on their compulsions, experience social isolation, and have difficulty concentrating at work or school.

The other options are not correct:

• Agoraphobia is a fear of open spaces or situations where escape might be difficult or embarrassing. Rita's symptoms do not suggest a fear of open spaces or situations.

• Bipolar disorder is a mental health disorder characterized by episodes of mania (excessive energy, grandiosity, and decreased need for sleep) and depression (low mood, loss of interest, and fatigue). Rita's symptoms do not suggest episodes of mania or depression.

• Generalized anxiety disorder (GAD) is characterized by excessive and persistent worry about a variety of things. While Rita's anxiety is related to her obsessions and compulsions, it is not as generalized as GAD.