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 of the following is the contribution of GERMANY to public health - \nSelect and explain. \nA. Socialization, B. Pasteurization, C. Development of baths, sewers, aqueducts for sanitation, D. Instituting compulsory sickness insurance', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Instituting compulsory sickness insurance", 'role': 'assistant'}]