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': 'What is the best method of informing the rural population about Oral rehydration technique: March 2013 (d, f) \nSelect and explain. \nA. Chalk and talk/Lecture, B. Demonstrations, C. Role play, D. Flash cards', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Demonstrations Demonstration involves showing by reason or proof explaining or making clear by use of examples or experiments. Put more simply, demonstration means to clearly show', 'role': 'assistant'}]