The correct statement that illustrates the difference between the U.S. dollar (a form of fiat money) and a U.S. gold certificate (a representative currency) is:
**A U.S. dollar does not represent a claim to some specific asset.**
This is because a U.S. dollar is fiat money, meaning it has value by government decree and does not represent a claim to physical assets like gold. In contrast, a gold certificate represents a claim to a specific amount of gold held by the issuer.