The correct answer is: Both A and R are true, but R is not the correct explanation of A.
The Kisan Movement was a peasant movement that took place in India in the early 20th century. The movement was led by Yadubans Sahay, who was a peasant leader from the state of Bihar. The movement was aimed at improving the conditions of the tenants and agriculture labourers in Palamu.
The reason given in the question is that the Kisan Movement was set in under the leadership of Yadubans Sahay for the improvement of the conditions of the tenants and agriculture labourers in Palamu. This is true, but it is not the only reason for the movement. The movement was also aimed at achieving other goals, such as the abolition of the zamindari system and the introduction of tenancy reforms.
Therefore, both A and R are true, but R is not the correct explanation of A.