The correct answer is: A. 20th July
The United Nations Day is celebrated on 20th July every year. It is the day on which the United Nations was founded in 1945. The United Nations is an international organization that aims to maintain international peace and security, develop friendly relations among nations, and promote social progress, better living standards, and human rights.
The United Nations Day was first celebrated in 1948. The day is celebrated with a variety of events, including speeches, concerts, and parades. The United Nations also organizes a number of activities to promote its work and to raise awareness of the issues that it addresses.
The United Nations is a unique organization that brings together countries from all over the world. It is a forum for countries to discuss their differences and to work together to solve common problems. The United Nations has played a major role in resolving conflicts, promoting human rights, and providing humanitarian assistance.
The United Nations is an important part of the international community. It is a forum for countries to work together to build a better world. The United Nations Day is a time to celebrate the achievements of the United Nations and to recommit to its work.
The other options are incorrect because they are not the dates of the United Nations Day.