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': 'To increase awareness of rural population towards small family norm, the best method is – \nSelect and explain. \nA. Film show, B. Charts Exhibitions etc, C. Role playing, D. Setting on example', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The health educator should set a good example in the things he is teaching.\nIf he is explaining the hazards of smoking, he will not be very successful if he himself smokes.\nIf he is talking about the "small family norm" he will not get very far if his own family size is big.', 'role': 'assistant'}]