Correct Option: A

The Salt March, also known as the Salt Satyagraha, began with the Dandi March on March 12, 1930. It was a direct action campaign of tax resistance and nonviolent protest against the British salt monopoly in colonial India, and triggered the wider Civil Disobedience Movement. Mahatma Gandhi led the Dandi march from his base, Sabarmati Ashram near Ahmedabad, to the sea coast near the village of Dandi.