What Is the Basis for a Market Economy

What is the basis for a market economy?

A) The ability to pursue an interest with minimal government restriction
B) The ability to limit profits on competitors based on government restriction
C) The ability to offer a good or service at a variety of price points
D) A limitation on the number of competitors the government will allow within a specific geographic region
E) The ability of a large number of smaller firms in an industry will limit influence