The Montague‑Chelmsford Report formed the basis of:

1. The Indian Councils Act, 1909
2. The Government of India Act, 1919
3. The Government of India Act, 1935
4. The Indian Independence Act, 1947

Explanation

Option (b) is correct

• The Montagu‑Chelmsford Report (1918) laid the foundation for the Government of India Act, 1919. Its key recommendations — dyarchy in provinces, enlarged legislative councils, and a bicameral central legislature — were embodied in the Act, making it the direct legislative outcome of the scheme.

Answer: (b) The Government of India Act, 1919