The correct answer is: A. World Post Day
World Post Day is celebrated on February 13 every year to commemorate the establishment of the Universal Postal Union (UPU) in 1874. The UPU is an intergovernmental organization that coordinates and develops international postal services. It is the oldest international organization in the world.
World Post Day is an opportunity to raise awareness of the importance of the postal sector and its role in promoting sustainable development. The theme for World Post Day 2023 is “Connecting the world, shaping the future.”
The other options are incorrect because:
- International Day of the Girl Child is celebrated on October 11.
- World Mental Health Day is celebrated on October 10.
- World Radio Day is celebrated on February 13.
World Radio Day is a United Nations observance held annually on February 13 to celebrate radio, a medium that reaches the vast majority of the world’s population. The day was established by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 2011.
The theme for World Radio Day 2023 is “Radio and Trust.” The theme highlights the role of radio in promoting trust and understanding between people and cultures.