Who should address the needs of a patient with a mental disorder? A. a speech therapist. B. an internal medicine doctor. C. a mental health professional. D. a medical intern.

C. a mental health professional.

Mental health professionals, such as psychologists, psychiatrists, and licensed therapists, are specifically trained to assess and address the needs of patients with mental disorders. While other healthcare providers may play a role in a patient's overall health, mental health professionals are best equipped to provide the appropriate care and treatment.