The correct answer is: A. International Labour Organisation
The International Labour Organisation (ILO) is a United Nations agency that deals with labour issues. It was founded in 1919, making it the oldest agency of the United Nations. The ILO’s mission is to promote social justice and internationally recognized human and labour rights. It does this by setting international labour standards, providing technical assistance to governments and employers’ and workers’ organizations, and conducting research on labour issues.
The Universal Postal Union (UPU) is an intergovernmental organization that coordinates and develops the international postal system. It was founded in 1874, making it the oldest international organization in the world. The UPU’s mission is to “ensure the provision of a reliable, efficient, affordable and accessible universal postal service, and to promote the development of the postal sector in the interests of all its members.”
The World Health Organisation (WHO) is a specialized agency of the United Nations that is concerned with international public health. It was founded in 1948, making it one of the oldest specialized agencies of the United Nations. The WHO’s mission is to “promote health, keep the world safe, and serve the vulnerable.”
The World Meteorological Organisation (WMO) is an intergovernmental organization that is concerned with the state and variability of the Earth’s atmosphere, its interaction with the land and oceans, and the effects of weather and climate on human health and well-being. It was founded in 1950, making it one of the newer specialized agencies of the United Nations. The WMO’s mission is to “ensure that everyone, everywhere has access to reliable and timely weather, water and climate information and services.”
In conclusion, the International Labour Organisation (ILO) is the oldest agency of the United Nations that deals with labour issues. It was founded in 1919.