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
The WHO was set up in – 
Select and explain. 
A. 1929, B. 1946, C. 1948, D. 1952
C: 1948
Answer: C: 1948 
Explanation: The constitution came into force on 7th April 1948, which is celebrated every year as world health day.