The correct answer is (a) Geneva.
The World Meteorological Organization (WMO) is an intergovernmental organization with a membership of 193 Member States and Territories. It is responsible for providing a global framework for the monitoring of the Earth’s climate and weather, and for the provision of weather forecasts and warnings.
The WMO was founded in 1950, and its headquarters are located in Geneva, Switzerland. The organization is headed by a Secretary-General, who is currently Petteri Taalas.
The WMO’s work is carried out through a number of specialized programs, including the World Weather Watch, the Global Atmosphere Watch, and the World Climate Programme. The organization also provides a number of services, including weather forecasting, climate monitoring, and disaster risk reduction.
The WMO is a vital part of the international effort to understand and manage the Earth’s climate and weather. Its work is essential for the safety and well-being of people around the world.
The other options are incorrect because:
(b) Rome is the headquarters of the Food and Agriculture Organization of the United Nations.
(c) Sydney is the capital of Australia.
(d) Tokyo is the capital of Japan.