Explanation:

- The Constitution of India was adopted by the Constituent Assembly on November 26, 1949, marking a pivotal moment in India's transition to a sovereign, democratic republic.

- Parliament of India: This is the legislative body responsible for making laws, but it did not exist in its current form at the time of adoption. Hence, it could not have adopted the Constitution.

- Governor General: This was the representative of the British Monarch during the colonial period. The position ceased to exist when India became a republic in 1950.

- British Parliament: Played a role in India's pre-independence legislative process but was not involved in the adoption of the Indian Constitution.