This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Living standard of people is best assessed by \nSelect and explain. \nA. Infant Moality Rate, B. Maternal Moality, C. Physical Quality of Life Index, D. Death Rate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: PQLI includes infant moality rate, life expectancy at age 1, and literacy. PQLI does not take income into account. Ref : Park&;s Textbook of Preventive and Social Medicine; 23rd edition - Pgno 17', 'role': 'assistant'}]