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': 'Screening is a type of ? \nSelect and explain. \nA. Primordial prevention, B. Secondary prevention, C. Primary prevention, D. Teiary prevention', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is b i.e., Secondary prevention', 'role': 'assistant'}]