The correct option is B 9 August 1942
In Mumbai, on 9 August 1942, the working committee of the Congress passed the resolution for a new movement, to demand the British to quit India immediately. As part of the Quit India Movement, boycotts and rebellions broke out in different parts of the country. The British immediately took action and arrested Gandhi, Nehru, Vallabhbhai Patel, and all the other important leaders of the Congress.