The goal of a market economy is to

a sustain self-sufficiency.

b preserve traditional customs.

c create equality within a society.

d promote free economic choices.

d promote free economic choices.

Explanation:

The study of Economic Science allows us to understand the fundamental assumptions that govern the functioning of market economies. A market economy operates under the logic of the interaction between supply and demand for goods and services, so that firms act in a system of competition, via prices, for the market share. In a market economy, economic agents are free to make their economic decisions. In this way, firms decide what to produce, when to produce, for whom to produce, and when to produce. The role of government is merely to ensure that the economic environment is prone to business development.

d. promote free economic choices