Which of the three functions of money are commonly met by each of the following assets in the U.S. economy?
a.paper dollar
b.precious metals
c.collectibles such as baseball cards, stamps, and antiques

Precious Metals

Rare, naturally occurring metallic elements of high economic value, which are often used as investment commodities, jewelry, and in industrial applications.

Paper Dollar

A term referring to United States currency notes made of paper, as opposed to coins or digital currency.

Collectibles

Items of personal or aesthetic value, often rare or unique, that are sought after and collected by enthusiasts.