The correct answer is: Suspension of land revenue.
Kheda Satyagraha was a peasant revolt in 1918 in Kheda district of Gujarat, India, led by Mahatma Gandhi. The revolt was against the British government’s decision to collect land revenue even though the crops had failed due to drought. Gandhi argued that the peasants should not have to pay land revenue in a year when there was no crop. The revolt was successful, and the British government eventually agreed to suspend collection of land revenue in Kheda district.
The other options are incorrect. Increased water cess is a tax on water usage. Forced indigo cultivation was a practice in which peasants were forced to grow indigo, a plant used to make dye, for the British East India Company. None of these practices were the cause of the Kheda Satyagraha.