Correct Option: C

The Salt March, also known as the Salt Satyagraha, began with the Dandi March on March 12, 1930. The Salt Satyagraha was the next significant non-violent protest against the British, after the Non-Cooperation movement of 1920-22 and India’s First War of Independence 1857. 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. This was the most significant organized challenge to British authority since the Non-cooperation movement of 1920–22, and directly followed the Purna Swaraj declaration of independence by the Indian National Congress on January 26, 1930.