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': 'Immunization is - \nSelect and explain. \nA. Primary prevention, B. Secondary prevention, C. Teiary prevention, D. Disability limitation', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Primary prevention Immunization is a specific protection type of primary prevention", 'role': 'assistant'}]