In which year did the Royal Indian Navy Mutiny begin in Bombay?

1946

The correct answer is Option (3) → 1946

The sailors employed by the British in the Royal Indian Navy (RIN) revolted against them for various reasons in February 1946.

The years immediately preceding the making of the Constitution had been exceptionally tumultuous: a time of great hope, but also of abject disappointment. On 15 August 1947, India had been made free, but it had also been divided. Fresh in popular memory were the Quit India struggle of 1942 – perhaps the most widespread popular movement against the British Raj – as well as the bid by Subhas Chandra Bose to win freedom through armed struggle with foreign aid. An even more recent upsurge had also evoked much popular sympathy – this was the rising of the ratings of the Royal Indian Navy in Bombay and other cities in the spring of 1946. Through the late 1940s there were periodic, if scattered, mass protests of workers and peasants in different parts of the country.