Concept:The Simon Commission was appointed in
1927 to review the Government of India Act
1919, and several political factors together led to its early appointment.
Explanation:The
1919 Montagu–Chelmsford reforms had not achieved much success, so a review was necessary.
The British Conservative government feared that a future Labour government might bring pro-India policies.
So the Commission was appointed early, in
1927, before Labour could come to power.
The increasing prominence of the Swaraj Party also needed to be countered.
Thus all the given reasons contributed to the appointment of the Simon Commission.
Answer:D. All the above