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: Social & Preventive Medicine
[{'content': 'Single best moality indicator- \nSelect and explain. \nA. CDR, B. PMR, C. ASDR, D. CFR', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., ASDR o Age standardized death rate (ASDR) is best moality indicator.", 'role': 'assistant'}]