Fiat money is a type of currency that has no intrinsic value (like gold or silver) and is not backed by a physical commodity; its value derives entirely from government decree and the public's ___ in its acceptance as a medium of exchange.

Answer: trust (or confidence / faith)

Modern paper currencies are pure fiat. A Rs. 500 note is just a piece of paper, but it commands immense purchasing power because the law mandates it as legal tender, and crucially, because every citizen trusts that they can exchange it for goods and services tomorrow. If this institutional trust collapses (as seen in historical hyperinflations), the fiat currency reverts to its zero intrinsic value.