The correct answer is (d) 1793 A.D.
The Permanent Settlement of Lord Cornwallis was introduced in 1793. It was a system of land revenue collection in India under which the zamindars, or landlords, were given permanent rights to collect revenue from the peasants in return for a fixed annual payment to the British East India Company. The system was designed to increase the Company’s revenue and to create a stable and reliable system of land revenue collection. However, it had a number of negative consequences, including the impoverishment of the peasantry and the rise of a class of absentee landlords.
Option (a), 1787 A.D., is incorrect because the Permanent Settlement was not introduced until 1793 A.D.
Option (b), 1789 A.D., is incorrect because the Permanent Settlement was not introduced until 1793 A.D.
Option (c), 1790 A.D., is incorrect because the Permanent Settlement was not introduced until 1793 A.D.