Jawaharlal Nehru introduced the `Objective Resolution` in the Constituent Assembly on 13th December, 1946. The Objective Resolution was a significant document that laid down the guiding principles and objectives for the newly independent India. It aimed to establish India as a sovereign, democratic, and socialist state that upholds justice, liberty, equality, and fraternity for its citizens.

Option 1 - Jawaharlal Nehru: This is the correct answer as mentioned above. Nehru played a crucial role in shaping the vision and direction of India as its first Prime Minister. He was a prominent leader during the freedom struggle and had a major influence on the drafting of the Indian Constitution.

Option 2 - Rajendra Prasad: Rajendra Prasad was the first President of India and an important figure in the Constituent Assembly. However, he did not introduce the Objective Resolution.

Option 3 - B.R. Ambedkar: B.R. Ambedkar was the chairman of the drafting committee of the Indian Constitution and made significant contributions. However, he did not introduce the Objective Resolution.

Option 4 - Alladi Krishnaswami Aiyar: Alladi Krishnaswami Aiyar was a lawyer and a member of the Constituent Assembly