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': 'Most important component of level of living is:(2004) \nSelect and explain. \nA. Health, B. Education, C. Occupation, D. Housing', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: aRef: Park, 17th ed, p. 20 & 18th ed, p. 21', 'role': 'assistant'}]