Concept:Commodity money is money that has value both as a medium of exchange and as a commodity for other uses.
Explanation:Commodity money has intrinsic value because the material itself is useful or valuable.
Examples include gold, silver, salt, cattle, cowries, and beads.
A currency note is fiat money, not commodity money, because its value depends on government backing rather than the material it is printed on.
Mobile money and cheques are not commodities; they are just payment methods or written promises.
Silver, however, is a precious metal that can be used for ornaments, industrial purposes, and as money.
Therefore, silver is a direct and correct example of commodity money.
Answer:D. silver