The correct answer is Payment of low wages to workers .

The Champaran Satyagraha of 1917 was the first Satyagraha movement led by Mahatma Gandhi.

In 1917, Mahatma Gandhi was invited to Champaran, Bihar, by local farmers who were being forced by British colonial landlords to grow indigo on a large portion of their land. The farmers were being exploited and forced to sell their indigo crops to the British landlords at a low price, and were also being forced to pay high rents for the land they used to grow their own crops.

Gandhi saw the situation as an opportunity to use his philosophy of Satyagraha to fight against British oppression. He organized a peaceful resistance movement in Champaran, encouraging the farmers to refuse to grow indigo and to resist paying rent to the landlords.

The British authorities responded with violence and arrests, but the Satyagraha movement continued to gain support and momentum. Finally, the British government was forced to appoint a commission to investigate the situation in Champaran. The commission’s report recommended changes in the system of indigo farming and land tenancy, which were eventually implemented.

The Champaran Satyagraha marked a significant turning point in the Indian independence movement, as it demonstrated the power of nonviolent resistance and united different sections of Indian society in a common cause. It also established Gandhi as a leader of the Indian nationalist movement and set the stage for his future Satyagraha movements, which would play a crucial role in India’s struggle for independence.