On 8th August 1942, the Quit India Resolution was adopted by the All India Congress Committee (AICC). This was a significant event in the Indian freedom struggle as it marked the launch of the Quit India Movement, led by Mahatma Gandhi, demanding an end to British Rule in India.

The other options are not related to this specific date.

• The Viceroy’s Executive council was indeed expanded to include more Indians, but this was part of the August Offer in 1940, not on 8th August 1942.
• The Congress ministries did resign in seven provinces, but this happened in 1939, not in 1942.
• Lastly, Cripps did propose an Indian Union with full Dominion Status, but this was part of the Cripps Mission, which also did not occur on 8th August 1942.

Therefore, the correct answer is that the Quit India Resolution was adopted by the AICC on this date.