20. 11 September is observed as - A.World day for War Orphans B.9/11 Anniversary C.World Day of Theatre for Children and Young People D.World Suicide Prevention Day
Option B Solution: 11 September observed as National Day of Service and Remembrance or 9/11 Day is a federally-recognized National Day of Service that happens in the United States on the anniversary of the September 11, 2001 terrorist attacks
