The correct answer to the question is option 2, 1930. In 1930, Mahatma Gandhi undertook the famous Dandi March as part of the Indian Independence Movement. This non-violent protest was a direct challenge to British salt monopoly in India. The march started on March 12, 1930 from Sabarmati Ashram in Gujarat and ended on April 6, 1930 at the coastal town of Dandi, covering a distance of 240 miles. Gandhi and his followers walked for nearly 24 days to reach the coast, where they made their own salt by evaporating seawater. The Dandi March had a significant impact on the Indian independence movement, as it garnered widespread attention and furthered Gandhi`s message of non-violent resistance against British rule.