"In theory, we should have enough money in an economy so at current prices we can buy all of the goods and services the economy is producing. What economic theory does this remind you of?"
On a basic level this reminds me of a simple supply/demand equilibrium. In addition, it brings to mind the importance of reserve ratios in banking. As a side note, I also thought banking's use of debt would assert we could not buy every good and service in the economy at this time.
My professor enjoys trick questions. Any thoughts on what I have proposed?