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': 'Primary prevention in coronary heart diseases- \nSelect and explain. \nA. Salt restriction, B. BP monitoring, C. Exercise in high risk area, D. Statins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: primary prevention- health promotion and specific protection. Regular physical activity should be a part of normal daily life. It particularly important to encourage the children to take up physical activity that they can continue through out their life.', 'role': 'assistant'}]