The correct answer is C. Baldev Singh.
Baldev Singh was the first Defence Minister of India. He was a Sikh politician from Punjab. He was born in 1892 and died in 1961. He was a member of the Indian National Congress and served as the Defence Minister of India from 1947 to 1952. He was also the Minister of Defence Production from 1952 to 1957.
A. K. M. Cariappa was a Field Marshal in the Indian Army. He was the first Indian Commander-in-Chief of the Indian Army. He was born in 1899 and died in 1993. He was a member of the Indian National Army and served as the Commander-in-Chief of the Indian Army from 1947 to 1953.
Gopalaswami Aiyangar was a lawyer and politician. He was born in 1882 and died in 1959. He was a member of the Indian National Congress and served as the Finance Minister of India from 1947 to 1950. He was also the Governor of Madras from 1952 to 1956.
Sardar Patel was a freedom fighter and politician. He was born in 1875 and died in 1950. He was a member of the Indian National Congress and served as the Deputy Prime Minister of India from 1947 to 1950. He was also the Home Minister of India from 1947 to 1950.