Explanation:

Certainly! Here's an explanation of the options:

- Rupak: This is not the name of the coin introduced by Muhammad bin Tughlaq.

- Rupee: While a well-known form of currency, the rupee was not the copper coin introduced by Muhammad bin Tughlaq.

- Jittal: This was a type of coin currency used during the medieval times, but it was not the copper coin introduced by Muhammad bin Tughlaq.

- Tanka: This was the silver coin originally used before Muhammad bin Tughlaq introduced the copper and brass coins as a replacement.

Muhammad bin Tughlaq introduced a copper currency as a replacement for silver coins, but it didn’t have a specific separate name like Tanka. Instead, he attempted to circulate it alongside the tanka, leading to economic confusion.

The correct answer is not option 3, and based on this understanding, .