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': 'In a population to prevent Coronary aery disease, changing harmful lifestyles by education is referred to as:- \nSelect and explain. \nA. High risk strategy, B. Primary prevention, C. Secondary prevention, D. Teiary prevention', 'role': 'user'}, {'content': "Answer: B \nExplanation: Primary level of prevention: It is action taken prior to onset of disease, which removes the possibility that a disease will ever occur. It signifies 'Intervention in the Pre-pathogenesis phase of a disease / health problem'. Modes of Intervention: Health promotion- Targeted at strengthening the host through a variety of approaches / interventions, e.g. Environmental modifications, nutritional interventions etc. Specific protection: Targeted at prevention of a disease through specific prevention.", 'role': 'assistant'}]