The correct answer is b. What are the variables that determine the price of a specific good? .

Reason: The microeconomic questions deal with very specific or a particular item. The correct option asks about the variables in the price determination of a specific product and this is a reason that it comes in the category of microeconomic questions. 'Microeconomics' deals with individual aspects and specific things, which is the main difference from macroeconomics as it deals with aggregate or whole items in an economy.