Correct option is A) 1950
The history of the Republic of India begins on 26 January 1950. The country became an independent nation within the British Commonwealth on 15 August 1947. Indian National Congress leader Jawaharlal Nehru became the first Prime Minister of India, but the leader most associated with the independence struggle, Mahatma Gandhi, accepted no office. The new constitution of 1950 made India a secular and a democratic state. India became a sovereign democratic republic after its constitution came into effect on 26 January 1950. Dr. Rajendra Prasad became the first President of India.