The correct option is A Government of India Act, 1935
The Government of India Act, 1935 was important so far as it stipulates features that are currently the part of the Indian Constitution. Provincial autonomy, Dyarchy in the center, Presence of three lists, the establishment of Reserve Bank of India, establishment of Federal court, communal representation, etc. The Act had no preamble and was enacted as a result of the nationalist movement to cater to their objectives and demands.