This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Name the technique which usually involves teaching the patient how to induce a state of deep muscle relaxation and describing imaginary scenes relevant to his fear: \nSelect and explain. \nA. Desensitization, B. Contingency management, C. Hypnosis, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Desensitization: The technique usually involves teaching the patient how to induce a state of deep muscle relaxation and describing imaginary scenes relevant to his fear.\nIndications of desensitization are:\n\nChild's initial visit.\nAt subsequent appointments when introducing dental procedures which are new to the patient.\nWhen treating referral patients.", 'role': 'assistant'}]