The correct answer is option 3 - A is true but R is false.

Statement A, "Khilafat Movement was launched in India to drive out the British from India," is true. The Khilafat Movement was a political campaign launched by Indian Muslims in the 1920s to protest against the British colonial rule in India. However, the objective of the movement was not to drive out the British from India, but rather to protect the caliphate and the religious rights of Muslims in Turkey.

Statement R, "After World War I, the British rule in India became more repressive," is false. In fact, World War I had the opposite effect on British rule in India. During the war, the British government in India relied heavily on Indian soldiers and resources, leading to a boost in nationalist sentiment. This, along with other factors, eventually paved the way for the Indian independence movement.

Therefore, while statement A is true, statement R is incorrect and does not provide the correct explanation for statement A.