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': 'The defluoridations process of drinking water developed by the NEERI is popularly known as? \nSelect and explain. \nA. Activated sludge process, B. Recarbonation process, C. Nalgonda process, D. Double pot method', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Nalgonda process", 'role': 'assistant'}]