The correct answer is: A. 1950.
The Uniting for Peace resolution was adopted by the United Nations General Assembly on November 3, 1950. The resolution was adopted in response to the North Korean invasion of South Korea, and it authorized the General Assembly to take action if the Security Council was unable to do so. The resolution has been used several times since its adoption, most notably during the 1967 Six-Day War and the 1990-1991 Gulf War.
Option B, 1960, is incorrect because the Uniting for Peace resolution was adopted in 1950, not 1960.
Option C, 1965, is incorrect because the Uniting for Peace resolution was adopted in 1950, not 1965.
Option D, 1980, is incorrect because the Uniting for Peace resolution was adopted in 1950, not 1980.