Final answer:
Modern forms of money like cheques, credit cards, and debit cards are examples of fiat money, which is declared as legal tender by a government without intrinsic value, relying on public trust.
Step-by-step explanation:
In modern society, methods of payment such as cheques, credit cards, and debit cards represent the evolution of money beyond its traditional physical form. These are known as fiat money (option A). Unlike commodity money, which is based on the value of the material from which it is made like gold or silver, fiat money has no intrinsic value. Instead, it is issued by a government as legal tender and its value is derived from the public's trust in the issuing government and its economy. An example of fiat money would be the paper money you carry, which is declared by a government to be legal tender for all debts.