The correct answer is option 2, Warren Hastings. Warren Hastings was the Governor-General of Bengal from 1774 to 1785. During his tenure, he faced allegations of corruption and misconduct in his administration. A group of British Parliamentarians, led by Edmund Burke, accused Hastings of exploiting the Indian population, accepting bribes, and engaging in unfair trade practices.

The impeachment proceedings against Warren Hastings began in 1786 and lasted until 1795. It was a lengthy and highly publicized trial held in the British Parliament. Hastings was charged with high crimes and misdemeanors during his term as Governor-General. The trial involved extensive examination of witnesses and evidence.

Ultimately, Warren Hastings was acquitted of most of the charges brought against him. The trial, however, had significant implications for the governance of British India. It highlighted the need for better regulation and oversight of British officials in India and led to reforms in the East India Company`s administration. The impeachment of Warren Hastings remains a significant event in the history of colonial India and the British Empire`s relationship with India.

Note: The other options provided in the question are incorrect. Lord Curzon (option 1) was never impeached by the British Parliament. Lord Canning (option 3) and Lord William Bentinck