When money serves as a common denominator for measuring the exchange rates among goods and services, it performs as a

Standard of value.

Explanation:

When money serves as a common denominator for measuring the exchange rates among goods and services, it performs as a standard of value.

Standard of value is an agreed-upon worth for a transaction in a country's medium of exchange, such as the U.S. dollar or Mexican peso. A standard of value allows all merchants and economic entities to set uniform prices for goods and services

answer; i believe its (d) intrinsic;