The correct answer is (a) Roosevelt.
The term “United Nations” was first used by Franklin D. Roosevelt in a speech to Congress on January 6, 1942. In the speech, Roosevelt called for the creation of an international organization that would work to prevent future wars. The term was later adopted by the Allies as the name for the organization that would be created after the end of World War II.
The other options are incorrect.
(b) Churchill was the Prime Minister of the United Kingdom during World War II. He was a strong supporter of the idea of an international organization to prevent future wars, but he did not coin the term “United Nations.”
(c) T.V. Soong was the Finance Minister of the Republic of China during World War II. He was also a strong supporter of the idea of an international organization to prevent future wars, but he did not coin the term “United Nations.”
(d) M. Litinov was the Foreign Minister of the Soviet Union from 1939 to 1946. He was a strong supporter of the idea of an international organization to prevent future wars, but he did not coin the term “United Nations.”