Answer : 2. "भारत सरकार अधिनियम, 1935"
Explanation :

The Government of India Act came into force on 4 August 1935. The first political reaction was towards the way, the representation of the princely states was proposed. The delegates were not to be elected by the public but by the rulers. The second important reaction was against the proposed form of dyarchy. The Dyarchy had been a total failure in the provinces, but now there was an experiment coming up at the centre. The safeguards and the special powers vested in the Governor-General was something like a “Charter of Slavery” as mentioned by Jawahar Lal Nehru. He compared it with a “machine with all brakes, no engine“.