This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
[{'content': 'Highest level of integration in health service is? \nSelect and explain. \nA. PHC, B. Sub centre, C. CHC, D. Distric hospital', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The Bhore committee in 1946 gave the concept of primary health center as a basic health unit to provide as close to the people as possible an intergrated curative and preventive health care to the rural population with emphasis on preventive and promotive aspects of health care (refer pgno:904 park 23rd edition)', 'role': 'assistant'}]