This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
Primary prevention in coronary hea diseases- 
Select and explain. 
A. Regular physical exercise, B. BP monitoring, C. Salt restriction, D. Statins
A: Regular physical exercise
Answer: A: Regular physical exercise 
Explanation: Primary prevention- health promotion and specific protection. Regular physical activity should be a pa of normal daily life. It paicularly impoant to encourage the children to take up physical activity that they can continue through out their life. Ref-Park&;s textbook of Preventive and Social Medicine 24th edition.