Option 1 states that in March 1942, Cripps persuaded the War Cabinet to agree to a draft declaration. This statement is correct. Cripps successfully convinced the War Cabinet to agree to a draft declaration which outlined the proposed constitutional reforms for India.

Option 2 states that Jawaharlal Nehru and Sardar Patel represented Congress to negotiate with the mission. However, this statement is NOT correct. In reality, Jawaharlal Nehru and Maulana Abul Kalam Azad represented Congress during the negotiations with the Cripps Mission. Sardar Patel was not a part of the negotiating team.

Option 3 states that the mission offered Dominion status after the war. This statement is correct. The Cripps Mission did offer Dominion status to India after the war, which meant that India would have had the same status as Canada or Australia within the British Commonwealth.

Option 4 states that the mission offered the formation of a constitution-making body after the war. This statement is correct. The Cripps Mission did propose the establishment of a constitution-making body that would draft India`s future constitution after the war.

Therefore, the correct answer is option 2. The statement that Jawaharlal Nehru and Sardar Patel represented Congress