Explanation:

- The Cripps Mission visited India in 1942. It was a British initiative to secure Indian cooperation in World War II efforts by offering Indian political leaders the promise of dominion status after the war.

- Option 4 - 1942: This is correct. The Cripps Mission aimed to grant India a larger role in governance and autonomy after WWII.

- Option 1 - 1927: This year is not related to the Cripps Mission. During this time, India witnessed the Simon Commission and growing demand for independence.

- Option 2 - 1946: In this year, the Cabinet Mission Plan visited, which led to key discussions on India’s independence.

- Option 3 - 1939: This year saw the beginning of WWII, which led to significant political activity in India regarding support for the war.