The correct option is agencies such as UNICEF and WHO.
The UN was founded in 1945 as an international organization.Among its main concerns are to cater for cordial relations among nations and seek international peace and security. In addition, the UN also encourages social progress and better living conditions and defends human rights.
The UN has a family of organizations that help it accomplish its main goals. This family of organizations is formed by the United Nations Secretariat, the Funds and Programmes such as the UNPD (United Nations Development Programme) or UNICEF (United Nations Children´s Fund);also agencies like WHO (World Health Organization), among others.