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
Iodized salt in iodine deficiency control programme is? 
Select and explain. 
A. Primary prevention, B. Secondary prevention, C. Teriary prevention, D. None
A: Primary prevention
Answer: A: Primary prevention 
Explanation: Ans. is 'a' i.e., Primary prevention Foification of food e.g. iodized salt is primary prevention.