Correct answer: (a) The Quit India Resolution was adopted by the AICC.
Explanation
- A
The Quit India Resolution was adopted by the AICC.
AICC adopted the Quit India Resolution. Bombay, 8 August 1942.
- B
The Viceroy's Executive Council was expanded to include more Indians.
Viceroy’s Council expanded. That is a different date (post-Cripps / 1940s expansion).
- C
The Congress ministries resigned in seven provinces.
Congress ministries resigned. 1939, after the war declaration.
- D
Cripps proposed an Indian Union with full Dominion Status once the Second World War was over.
Cripps’s Indian Union. March 1942, not 8 August.
Summary. Official key is (a). On 8 August 1942 the AICC at Gowalia Tank, Bombay, passed the Quit India Resolution. The other three events sit on other dates.