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 best method of teaching an urban slum about ORS is – \nSelect and explain. \nA. Lecture, B. Role play, C. Demonstration, D. Flash cards', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Demonstration \n\nA demonstration is a carefully prepared presentation to show how to perform a skill or procedure.\nDemonstration as a means of communication has been found to have a high educational value in programmes like-\n\n\nEnvironmental sanitation → installation of a hand pump, construction of a sanitary latrine.\nMother and child health → demonstration of oral rehydration technique,\nControl of disease, e.g. scabies.', 'role': 'assistant'}]