This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Levels of Prevention of Disease, Subject name: Social & Preventive Medicine
[{'content': 'Primary level of prevention is? \nSelect and explain. \nA. Prevention of emergence of risk factors, B. Prevention of disease in Pre-pathogenesis phase, C. Prevention of disease in incipient stage, D. Prevention of disability and rehabilitation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Modes Primordial Before the emergence of risk factor Health education Primary Risk factor but no disease yet Health promotion, specific protection Secondary Disease possible staed in the body Early diagnosis, Treatment Teiary Disease is already in progression Disability limitation , Rehabilitation', 'role': 'assistant'}]