The correct answer is C. Distribution of income.
Money is a medium of exchange, a unit of account, and a store of value. It is used to facilitate transactions, measure the value of goods and services, and store wealth.
A medium of exchange is a good or service that is widely accepted in exchange for other goods and services. Money is a medium of exchange because it is generally accepted by everyone in a society as a means of payment.
A unit of account is a standard measure of value in which prices are expressed and debts are recorded. Money is a unit of account because it is a common denominator that can be used to compare the values of different goods and services.
A store of value is a way to preserve purchasing power over time. Money is a store of value because it can be saved and used to purchase goods and services in the future.
Distribution of income is the process of allocating income among individuals and households. Money is not a primary function of distribution of income because it is not used to directly allocate income. Instead, income is distributed through a variety of mechanisms, such as wages, salaries, profits, and interest.
In conclusion, the correct answer is C. Distribution of income.