The correct answer is option 3, Lord William Bentinck. Sati, the practice of a widow self-immolating on her husband`s funeral pyre, was prohibited by Lord William Bentinck during his tenure as the Governor-General of India from 1828 to 1835. He saw the practice as inhumane and ordered its abolition. Sati had been a long-standing tradition in India, deeply rooted in Hindu culture and belief, but it faced increasing criticism and opposition during the British colonial period. Lord William Bentinck`s action was an important step towards social reform in India, as it aimed to protect the rights and welfare of women. This prohibition was a significant turning point in the fight against harmful and unjust practices that oppressed women in Indian society at the time.