Which act of the British Parliament in 1935, the longest ever passed by Westminster at the time, introduced provincial autonomy and federal structure, and later heavily influenced the Constitution of India?

• A Government of India Act 1935 ✓
• B Indian Councils Act 1909
• C Montagu-Chelmsford Reforms
• D Indian Independence Act 1947

The Government of India Act 1935 provided a blueprint for the federal structure later adopted by independent India's Constitution, with many of its provisions carried over almost verbatim.