Correct Option: C

The Government of India Act 1919 had introduced the system of dyarchy to govern the provinces of British India. However, the Indian public clamoured for revision of the difficult dyarchy form of government, and the Government of India Act 1919 itself stated that a commission would be appointed after 10 years to investigate the progress of the governance scheme and suggest new steps for reform. In the late 1920s, the Conservative government appointed seven MPs (including Chairman Simon) to constitute the commission that had been promised in 1919 that would look into the state of Indian constitutional affairs.