Option d is the correct answer. Statement 1 is correct- Sher Shah Suri's land revenue system aimed for welfare, justice, and efficiency, dividing land into three categories with cultivators paying 1 / 3 1/3 of the produce; he safeguarded peasants with measures like installment payments and famine loans. Revenue officers were Amils, and Qanungo managed revenue records. He introduced crop rates and Zabti-i-har-sal, assessing land yearly, and measured land using Sikandari gaz. Statement 2 is correct- Sher Shah Suri administrative reforms had vast resemblance to that of Alauddin Khilji. He implemented four central departments- Diwan-i-arz (Department of Military), Diwan-i-Rasalat (Department for foreign and religious affairs), Diwan-i-Insha (Royal Secretariat), Diwan-i-wijarat (Department of Finance). Statement 3 is correct- Sher Shah efficiently restructured the military administration, revitalizing Alauddin's Chehra and Dagh system. He took personal charge of enlisting soldiers and managing their direct payment. He categorized the army into sawars (essential units), elephants, and frontmen. Additionally, he upheld his own special royal force known as Khasa Kail. Statement 4 is correct- Sher Shah also introduced new copper coins called Dam and it is interesting to note that they were in circulation till c. 1835 CE. He was also the first ruler to introduce silver Rupayia ( 1 Rupayia = 64 =64 dams) and gold coin (Ashrafi/Mohur)