“Money is a standard for deferred payments.” This function of money comes in the category of:

The correct answer is A. primary function.

Money is a medium of exchange, a unit of account, and a store of value. It is a standard for deferred payments because it can be used to pay for goods and services in the future. This is one of the primary functions of money.

The other options are incorrect.

B. Secondary function: A secondary function of money

C. Contingent function: A contingent function of money is a function that depends on the existence of other factors. For example, money can be used as a unit of account, but this depends on the existence of a common standard of measurement.

D. Other function: There are many other functions that money can serve, but these are not considered to be primary functions. For example, money can be used as a symbol of wealth or status.