Explanation:

3rd option is correct.
In 1927, British Government appointed the Simon Commission to enquire into report on the making of Constitution.
The Indian Statutory Commission was a group of seven British Members of Parliament of United Kingdom under the chairmanship of Sir John Simon assisted by Clement Attlee. The commission arrived in British-occupied India in 1928 to study constitutional reform in Britain's most important colonial dependency. It was commonly referred to as the Simon Commission after its chairman, Sir John Allsebrook Simon.