The correct answer is: A. World Habitat Day, recognized by the UN
World Habitat Day is an international observance held annually on the first Monday of October, which was proclaimed by the United Nations General Assembly in 1985. The day is intended to remind the world of the fundamental right of all human beings to adequate shelter and the need for sustainable development of human settlements.
The theme for World Habitat Day 2023 is “Accelerating urban action for a better urban future”. The theme highlights the need for urgent action to address the challenges of rapid urbanization, including poverty, inequality, and environmental degradation.
The United Nations Day for South-South Cooperation is observed on 20 December. The day was established by the General Assembly in 2005 to promote and strengthen South-South cooperation, which is a form of international cooperation between developing countries.
World Day for Laboratory Animals is observed on 24 April. The day was established by the International Association for the Study of Pain in 1998 to raise awareness of the ethical issues surrounding the use of animals in scientific research.
World Food Day is observed on 16 October. The day was established by the United Nations in 1979 to raise awareness of the problem of hunger and to promote food security.