alleryWHO نے کس سال میں چیچک کے خاتمے کا اعلان کیا تھا؟
A1966
B1972
C1980
D1990
Answer & Solution
Correct answer: C. 1980
WHO نے 1980 میں چیچک کے مکمل خاتمے کا اعلان کیا۔
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