The Champaran episode was considered a turning point by Gandhi because:

Voice spread far and wide:
The Champaran episode marked the beginning of Mahatma Gandhi's active involvement in the Indian independence movement. Gandhi's decision to support the indigo farmers in Champaran and his subsequent activities gained widespread attention and support. His efforts to mobilize the local population and bring their grievances to the forefront were successful in garnering national and international attention. The news of his activities spread far and wide, amplifying the voices of the oppressed farmers and their struggle against the British landlords.

Became famous:
Gandhi's involvement in the Champaran episode brought him into the limelight as a prominent leader in the fight against British oppression. His principled stand and his commitment to nonviolent resistance gained him popularity and recognition among the masses. The Champaran episode became famous not only for the cause it represented but also for the transformative impact it had on Gandhi's own life and his approach to the freedom struggle. It marked the beginning of his journey as a leader and as the face of the Indian independence movement.

The British were scared:
Gandhi's activism in Champaran, challenging the British landlords and their oppressive practices, posed a direct threat to the British rule. The British authorities were not accustomed to facing such organized resistance from the local population. Gandhi's ability to mobilize the masses and create a united front against the British landlords shook the colonial administration. They realized that Gandhi's methods of nonviolent resistance and his ability to galvanize public support could potentially undermine their authority and control. The British were scared of the impact Gandhi's actions could have on their rule and their ability to exploit the Indian people.

To protest the courts' order to postpone the trial:
This statement is incorrect and not a reason why Gandhi considered the Champaran episode a turning point. The Champaran episode was primarily focused on addressing the grievances of the indigo farmers and challenging the oppressive practices of the British landlords. The issue of the courts' order to postpone the trial was not a central factor in Gandhi's decision to support the farmers and initiate his activism. The main reasons for considering the Champaran episode a turning point are the widespread dissemination of his message, the fame and recognition he gained, and the fear it instilled in the British authorities.