Step 1: Understanding Sher Shah's monetary reforms.
Sher Shah Suri, the founder of the Suri Empire in northern India, is known for his significant monetary reforms. One of his major contributions was the introduction of the Rupiya, a silver coin that became the standard currency in his empire and later influenced the Mughal monetary system. The Rupiya was the precursor to the modern rupee.
Step 2: Analyzing the options.
(A) Mohur: This is incorrect. The Mohur was a gold coin used by the Mughals, not Sher Shah.
(B) Rupiya: Correct. The Rupiya was introduced by Sher Shah and became the standard currency.
(C) Daam: This is incorrect. Daam was a smaller coin, but Sher Shah is famous for introducing the Rupiya.
(D) Pana: This is incorrect. The Pana was a coin used in earlier times, but Sher Shah is credited with introducing the Rupiya.
Step 3: Conclusion.
Sher Shah introduced the Rupiya, which became the standard currency in his empire. Therefore, the correct answer is (B) Rupiya.