Correct Answer: B

Rationale: For a patient with agoraphobia, the priority intervention should be gradual exposure to feared situations. This approach helps the patient confront and gradually overcome their fear of leaving home, a common challenge in agoraphobia. By exposing the patient to feared situations in a step-by-step manner, they can learn to manage their anxiety and increase their confidence in leaving home. Teaching relaxation techniques (Choice A) can be beneficial but may not address the core issue of avoidance behavior. Encouraging the patient to attend social gatherings (Choice C) can be overwhelming and counterproductive at the initial stage of treatment. Providing education about the disorder (Choice D) is important but should come after addressing the immediate need for exposure therapy.

Correct Answer: B

Rationale: Exposure and response prevention (ERP) is a specific type of CBT that is considered the most effective treatment for OCD. ERP involves exposing the individual to anxiety-provoking stimuli and preventing the usual compulsive responses, leading to a decreased anxiety response over time. This type of therapy helps individuals learn to tolerate the anxiety triggered by obsessions without engaging in compulsions, ultimately reducing OCD symptoms. Choices A, C, and D are incorrect. Dialectical behavior therapy (Choice A) is more commonly used for treating conditions like borderline personality disorder, not OCD. Interpersonal therapy (Choice C) focuses on improving interpersonal relationships and communication skills, which is not the primary approach for OCD. Supportive therapy (Choice D) provides emotional support and guidance but is not as effective as ERP in treating OCD.

Correct Answer: B

Rationale: Anhedonia, the inability to feel pleasure in activities that were once enjoyable, is a hallmark symptom of major depressive disorder. Patients with major depressive disorder often experience a pervasive feeling of emptiness and loss of interest in activities they used to find pleasurable. Euphoria, increased energy, and racing thoughts are more commonly associated with conditions like bipolar disorder rather than major depressive disorder.

Correct Answer: B

Rationale: Buspirone is often chosen as a first-line treatment for generalized anxiety disorder (GAD) due to its efficacy and favorable side effect profile. Unlike benzodiazepines such as clonazepam (A), buspirone does not carry the risk of tolerance, dependence, or withdrawal symptoms, making it a preferred choice. While propranolol (C) and hydroxyzine (D) are sometimes used for anxiety, they are not typically considered first-line treatments for GAD.

Correct Answer: B

Rationale: Sertraline is a selective serotonin reuptake inhibitor (SSRI) commonly used to treat social anxiety disorder. SSRIs are a first-line pharmacological treatment for social anxiety disorder due to their effectiveness in reducing anxiety symptoms by increasing serotonin levels in the brain, which helps regulate mood and emotions. Methylphenidate is a stimulant primarily used in attention deficit hyperactivity disorder (ADHD) but not in social anxiety disorder. Lithium is typically used in bipolar disorder, while haloperidol is an antipsychotic medication more commonly used in conditions like schizophrenia. Therefore, the correct choice for treating social anxiety disorder is Sertraline (B).