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': 'Which country had introduced school health services for the first time - \nSelect and explain. \nA. France, B. Russia, C. United States of America, D. India', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d i.e., India', 'role': 'assistant'}]