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
World health day is celebrated on which of the following day? 
Select and explain. 
A. 1st December, B. 31st May, C. 7th April, D. 8th May
C: 7th April
Answer: C: 7th April 
Explanation: World health day is celebrated in 7thof April every year as a bih date of world health organization. Each year a theme is is selected for World Health Day that highlights a priority area of concern for WHO. - Theme for 2010 was Urbanization and health - Theme for 2011 was antimicrobial resistance and its global spread.