The correct answer is (a) 1919.
The International Labour Organization (ILO) is a United Nations agency that promotes social justice and internationally recognized human and labor rights. It was established in 1919 as part of the Treaty of Versailles, following the First World War. The ILO’s stated mission is to promote decent work for all through dialogue, tripartism and international cooperation.
The ILO is the only tripartite international organization, meaning that it brings together representatives of governments, employers and workers to discuss and agree on policies and programs. The ILO has 187 member states, and its headquarters are located in Geneva, Switzerland.
The ILO has developed a number of international labor standards, which are legally binding treaties that set minimum standards for working conditions. The ILO also provides technical assistance to governments and employers’ and workers’ organizations to help them implement these standards.
The ILO has been awarded the Nobel Peace Prize twice, in 1969 and 2001.
The other options are incorrect because the ILO was not established in those years.