Correct Answer: A

Rationale: The correct answer is A because buspirone is not meant to be taken on an as-needed basis. It should be taken consistently to achieve optimal effectiveness in managing generalized anxiety disorder. Taking it as needed may lead to inadequate symptom control and reduced therapeutic benefits.

Correct Answer: C

Rationale: Among the symptoms listed, difficulty sleeping is particularly concerning in patients with major depressive disorder. Insomnia or other sleep disturbances can exacerbate depressive symptoms and increase the risk of suicidal ideation. Healthcare professionals should address sleep issues promptly to provide appropriate interventions and prevent further complications.

Correct Answer: B

Rationale: Lithium is the medication frequently prescribed to stabilize mood in patients with bipolar disorder. It helps to reduce the frequency and severity of manic episodes, making it a cornerstone in the treatment of bipolar disorder. Sertraline is an antidepressant commonly used for depression, while haloperidol and diazepam are not typically first-line treatments for bipolar disorder.

Correct Answer: B

Rationale: Monitoring the patient's weight weekly is crucial in the care of individuals with anorexia nervosa as it allows healthcare providers to track changes in weight, which is a key indicator of nutritional status. Regular weight monitoring helps in identifying any significant weight loss or gain, enabling prompt intervention and adjustment of the treatment plan to address the patient's nutritional needs effectively.

Correct Answer: B

Rationale: Excessive worrying about various aspects of life is a hallmark symptom of generalized anxiety disorder (GAD). In GAD, individuals experience excessive and uncontrollable worry about a wide range of everyday problems. This persistent worrying can lead to physical and emotional symptoms, impacting their daily functioning and quality of life. Fear of social situations, hallucinations, and impulsive behaviors are not typically associated with GAD.