12 May is observed as –

World day for War Orphans
United Nations Day for South-South Cooperation
International Nurses Day
World Suicide Prevention Day

The correct answer is: World day for War Orphans.

World Day for War Orphans is observed on May 12 every year. It was established by the United Nations General Assembly in 2002 to raise awareness of the plight of war orphans and to promote their rights and well-being.

War orphans are children who have lost one or both parents as a result of war or armed conflict. They are often left homeless, traumatized, and without access to basic necessities such as food, shelter, and education.

The United Nations estimates that there are over 25 million war orphans worldwide. The majority of these children live in developing countries that have been affected by war or armed conflict.

World Day for War Orphans is an opportunity to raise awareness of the plight of war orphans and to promote their rights and well-being. It is also a day to call for action to protect and support war orphans and to help them rebuild their lives.

Here is a brief explanation of each option:

  • United Nations Day for South-South Cooperation is observed on December 19 every year. It was established by the United Nations General Assembly in 1986 to promote South-South cooperation, which is cooperation between developing countries.
  • International Nurses Day is observed on May 12 every year. It was established by the International Council of Nurses in 1974 to commemorate the birth of Florence Nightingale, who is considered the founder of modern nursing.
  • World Suicide Prevention Day is observed on September 10 every year. It was established by the International Association for Suicide Prevention in 2003 to raise awareness of suicide and to promote suicide prevention.