The correct answer is: A. 11 December
International Day for Mine Awareness and Assistance in Mine Action is observed on 11 December each year. The day was established by the United Nations General Assembly in 2005 to raise awareness of the dangers of landmines and other explosive remnants of war, and to promote international cooperation in mine action.
Mines and other explosive remnants of war are a major humanitarian problem. They kill and injure people, prevent access to land and resources, and hinder development. In 2020, there were an estimated 64,000 casualties from landmines and other explosive remnants of war.
The United Nations Mine Action Service (UNMAS) is the lead United Nations agency for mine action. UNMAS works to clear landmines and other explosive remnants of war, to provide assistance to victims, and to promote mine awareness.
On International Day for Mine Awareness and Assistance in Mine Action, the United Nations calls on all countries to take action to address the landmine problem. The United Nations also calls on all countries to sign and ratify the Mine Ban Treaty, which prohibits the use, stockpiling, production, and transfer of anti-personnel landmines.
The other options are incorrect because they are not the dates on which International Day for Mine Awareness and Assistance in Mine Action is observed.