The correct answer is option 2, which states that statement 2 only is correct.

Statement 1 is incorrect because the Champaran Satyagraha was actually Gandhiji`s first major political action in India as a leader of the masses. It took place in 1917, while his return to India from South Africa was in 1915.

However, statement 2 is correct. The Champaran Satyagraha was launched by Gandhiji to address the issues faced by indigo plantation workers in Champaran, Bihar. The workers were being forced to cultivate indigo by the British landlords, which was causing extreme hardship and exploitation. Gandhiji led a successful nonviolent protest against these practices, which brought attention to the plight of the workers and resulted in significant reforms.

In summary, statement 1 is incorrect as the Champaran Satyagraha was Gandhiji`s first major political action in India, while statement 2 is correct as it correctly identifies the purpose of the Satyagraha in addressing the problems faced by the indigo plantation workers.