What determines the number and prices of goods and services that will be
available to consumers in a market economy?
O
A. The law of marginal utility
B. The law of externality
O
C. The law of diminishing returns
O
D. The law of supply and demand

D. The law of supply and demand

Explanation:

A market economy is an economy that exists in a perfect market. The economy is controlled by the forces of demand and supply. This means that no party controls or determines the price nor the quantity in the market, but the law of demand and supply.