The correct answer is A. Switzerland.
The Universal Postal Union (UPU) is an intergovernmental organization founded in 1874 that coordinates and develops the international postal system. Its headquarters is located in Bern, Switzerland.
The UPU has 192 member countries, and its mission is to “ensure a reliable, affordable, and accessible postal network that connects the world.” The UPU does this by providing a forum for cooperation between member countries, developing international standards for postal services, and providing technical assistance to developing countries.
The UPU is a specialized agency of the United Nations, and its work is overseen by the UPU Council, which is made up of representatives from all member countries. The UPU is also governed by a General Assembly, which meets every four years.
The UPU plays a vital role in the global economy by facilitating the exchange of goods and services. The UPU also plays a role in development by providing access to postal services in developing countries.
The UPU is a valuable organization that provides essential services to the global community.