Explanation:

The Montagu-Chelmsford Report was formed on the basis of the Government of India Act, 1919.
The Government of India Act, 1919 was an Act of the Parliament of the United Kingdom. It was passed to expand participation of Indians in the government of India. The Act embodied the reforms recommended in the report of the Secretary of State for India, Edwin Montagu, and the Viceroy, Frederic Thesiger. The Act covered ten years, from 1919 to 1929. This Act represented the end of benevolent despotism and began genesis of responsible government in India.