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
Prevention of emergence of risk factor is: 
Select and explain. 
A. Primordial prevention, B. Primary prevention, C. Secondary prevention, D. Teiary prevention
A: Primordial prevention
Answer: A: Primordial prevention 
Explanation: Primordial prevention