I just did my econ exam paper 1 today. I answered a very similar question. lol
Market economy, which btw means capitalism with minimal gov restrictions, so a mixed-lite.
This system sets the socially optimal price and quantity produced by the laws that govern supply and demand. Rather than
having a gov determine everything, the market itself answers the 3 basic economic questions: what to produce, how to
produce, and for whom to produce. As each firm produces according to its own profit maximization point, and as consumers
try to get the best deal for their needs, society thus determines how best to achieve both allocative efficiency as well
as productive efficiency and thereby allocates the best resources to the best production possibilities.
Two. Competition. Each firm has now the incentive to compete to maintain current customers and to attract new ones. To
do so, technological innovation occur. Quality of product or service is ensured. In addition, the competition in the
factor market for the best workers drive up the general education level of the people, which is a larger measurement of
economic development, not jsut numerical economic growth.
Free flow of capital. Each individual and firm can freely invest. They bear the risk, but the incentive of the reward
lets them to take the risk and seek innovations. There will also be a greater rate of return in an open market than a
heavily regulated one.
In a market economy, gov plays the role of a rule setter and enforcer, maintaining competition and regulations that
promote the general wellfare without sacrificing free choice. Such an economy best maximizes marginal social benefit
while minimizing marginal social cost.
That was a VERY bare bones version of things. I pretty muched condensed my entire exam essay into that. So not very
specific. lol
By the way, I'm not advocating market economy. That's just my answer to my exam question: how does a market
economy promote economic development?