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 for teaching mothers about using ORS is: \nSelect and explain. \nA. Group discussion, B. Demonstration, C. Lecture, D. Flannel graph', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A demonstration is a carefully prepared presentation to show how to perform a skill or procedure. Here a procedure is carried out step by step before an audience. Demonstration is found to have high education value in programmes like teaching a mother the use of oral rehydration therapy at home. Ref: Park 21st edition, page: 803.', 'role': 'assistant'}]