Who among the following was impeached in the British Parliament?

The correct answer is C. Warren Hastings.

Warren Hastings, the first Governor-General of India (1772–1785), was impeached by the British Parliament in 1787 following his return to England, largely due to accusations of corruption and administrative mismanagement, including the Rohilla War and the treatment of the Raja of Benares. The trial lasted seven years (1788–1795) and ended with his acquittal by the House of Lords.