India joined the United Nations after ratifying the UN Charter in ______.

October 1945

The correct answer is Option 3 - October 1945

India joined the United Nations after ratifying the UN Charter in 1945.

India became a member of the United Nations (UN) shortly after its independence on August 15, 1947. The United Nations is an international organization founded on October 24, 1945, with the primary objective of promoting peace, security, cooperation, and development among nations.
On October 30, 1945, India ratified the UN Charter, formally becoming a member of the United Nations. As a member state, India pledged to uphold the principles and purposes of the UN Charter, including the maintenance of international peace and security, the promotion of human rights, and the advancement of social and economic development worldwide.