Important National and International Days

March 22 is observed as World Day for Water (World Water Day), designated by the United Nations in 1993 to raise awareness about freshwater resources. The day focuses on advocating for sustainable management of freshwater resources and the 2 billion people living without safely managed drinking water.

September 16 is World Ozone Day, commemorating the 1987 signing of the Montreal Protocol on Substances that Deplete the Ozone Layer. The UN designated this day in 1994 to raise awareness about ozone depletion and its environmental impacts. The Montreal Protocol is considered one of the most successful environmental treaties.

May 3 is World Press Freedom Day, proclaimed by the UN General Assembly in 1993 to raise awareness about press freedom and to support journalists worldwide. The date commemorates the Windhoek Declaration, a 1991 statement of principles for independent African media. The day honors journalists who risk their lives for truth.

International Literacy Day is celebrated globally on September 8th every year. It was proclaimed by UNESCO in 1966 to highlight the importance of literacy to individuals, communities, and societies. The day promotes literacy as a tool for empowerment and development worldwide.

Nobel Prizes are awarded annually on December 10, the anniversary of Alfred Nobel's death. This tradition has been followed since 1901 when the first Nobel Prizes were awarded.

Rabindranath Tagore was born on May 7, 1861 (7 May). He was a polymath who reshaped Bengali literature and music, and became the first non-European to win the Nobel Prize in Literature in 1913. His birthdate is widely celebrated in Bengal and across India.

Swami Vivekananda was born on January 12, 1863 (12 Jan). This date is now celebrated as National Youth Day in India in his honor. He was a key figure in introducing Indian philosophies to the Western world and represented Hinduism at the 1893 Parliament of World Religions in Chicago.

Khudiram Bose was born on December 3, 1889 (3 Dec). He was one of the youngest revolutionaries in the Indian independence movement and was martyred at age 18. He is remembered for his courageous role in the freedom struggle against British colonial rule.

Bhagat Singh was born on September 28, 1907 (28 Sep). He was a legendary revolutionary socialist who became a symbol of resistance against British rule. His execution at age 23 in 1931 made him a martyr and inspired countless others in the freedom struggle.

World Oceans Day is celebrated annually on June 8. It was officially recognized by the United Nations in 2008 to raise awareness about the crucial role oceans play in our lives and the importance of conserving marine ecosystems.

World Red Cross and Red Crescent Day is celebrated annually on May 8th. This date marks the birth anniversary of Henry Dunant, the founder of the Red Cross movement. The date in option A (40671) represents May 8, 2011 in Excel date format.

Barack Obama was born on August 4, 1961, in Honolulu, Hawaii. This is a well-documented biographical fact, making option A the correct choice.

International Literacy Day, proclaimed by UNESCO in 1966, is annually observed on September 8th worldwide. This day highlights the importance of literacy for individuals, communities, and societies, promoting literacy as a human right and foundation for learning.