Concept:The functions of money are its primary economic roles, whereas general acceptability is a quality that money must possess.
Explanation:The main functions of money are medium of exchange, store of value, standard of deferred payment, and unit of account.
A medium of exchange means money is used to buy and sell goods and services.
A store of value allows wealth to be saved and used later.
A standard of deferred payment enables debts to be settled in the future.
A unit of account provides a common measure for pricing and comparison.
General acceptability is not a function but a fundamental characteristic of money.
For an item to act as money, it must be generally accepted by people in an economy.
Therefore, the option that is not a function of money is general acceptability.
Answer:D. general acceptability.