Which of the following is a diagnostic test for anxiety disorder?

A. Nagasaki Anxiety Scale. There is no recognized Nagasaki Anxiety Scale used in clinical practice for diagnosing anxiety disorders. B. Vanderbilt Anxiety Scale. The Vanderbilt Assessment Scale is primarily used for ADHD screening in children, not for anxiety disorders. It evaluates symptoms of inattention, hyperactivity, and impulsivity, along with comorbid behavioral issues. C. Hamilton Anxiety Scale. The Hamilton Anxiety Rating Scale (HAM-A) is a widely used diagnostic tool for assessing the severity of anxiety symptoms. It evaluates somatic and psychological symptoms of anxiety, such as tension, fears, insomnia, and autonomic disturbances. It is commonly used in clinical and research settings to monitor treatment response. D. Jarrad and Cesar Anxiety Scale. There is no known Jarrad and Cesar Anxiety Scale in psychological or psychiatric diagnostic testing, making it an invalid option for anxiety assessment.