Explanation
The correct answer is A: 8th August, 1942.
On 8th August 1942, Mahatma Gandhi gave the famous speech at the All India Congress Committee (AICC) session in Mumbai. In this speech, he gave the call of "Do or Die" to the people of India, urging them to take up the Quit India Movement against the British rule. The Quit India Movement aimed at demanding an end to British colonial rule in India and was one of the most significant movements in India's struggle for independence.
The Quit India Movement was a mass civil disobedience movement that lasted for two years from 1942 to 1944, during which many Indian leaders, including Mahatma Gandhi, were arrested and imprisoned by the British authorities. The movement was ultimately successful in securing India's independence in 1947.