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': 'Main intervention in primordial prevention ? \nSelect and explain. \nA. Immunization, B. Education, C. Screening, D. Chemoprophylaxis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Education o The main intervention in primordial prevention is through individual and mass education.", 'role': 'assistant'}]