Quit India Movement was launched in response to the failure of:

The correct answer is B) Cripps Mission. The Cripps Mission of March-April 1942 offered dominion status after the war, with a constituent assembly and a provision allowing provinces to opt out. Congress rejected it, and the frustration over this failure led Gandhi to launch the Quit India Movement at the AICC session in Bombay on 8 August 1942, with the call 'Do or Die'.

• A) Cabinet Mission plan is wrong because it came in 1946, four years after the Quit India Movement.
• C) Simon Commission Report is wrong because the Simon Commission (1927-30) was boycotted by Congress and led to the Nehru Report, not to Quit India.
• D) Wavell Plan is wrong because it was offered in June 1945 at the Simla Conference, which failed, and that too came after the movement had ended.

The core concept is the sequence of constitutional offers and their failures, which explains the escalation from negotiation to mass agitation. For Mains, this links to how wartime compulsions shaped British India policy and why the Cripps offer marked a turning point in the freedom struggle.

Trap: Candidates often pick the Cabinet Mission because it is the most famous 1940s mission. Always check the year before linking a plan to a movement.