To what extent is/does your essay focus on the three questions as they are answered by the free market as opposed to some other approach?
How well, do you organize your facts? In other words, how well do you show the fundamentals of market operations to be efficient?
How well, do you use the language of economics? Vocabulary from Microeconomics, do not use artificially elevated language. How well do you select and cite your sources, and how mechanically clean is your writing?