This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, Subject name: Social & Preventive Medicine
[{'content': 'Effective to change health behaviour and attitudes of people \nSelect and explain. \nA. Workshop, B. Group discussion, C. Panel discussion, D. Demonstration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Group discussion is considered a very effective method of health communication. It permits the individuals to learn by freely exchanging their knowledge, ideas and opinions. Where long-term compliance is involved (cessation of smoking) group discussion is considered valuable. Ref : Park 23rd edition Pgno : 680', 'role': 'assistant'}]