Rent control is an example of a "price ceiling", it sets the price of rent "below" the equilibrium price and results in a "shortage" of apartments.
Answer is "D".
Rent control is a type of value control that confines the sum a property proprietor can charge for leasing a home or other land. Rent control goes about as a price ceiling by keeping rents either from being charged over a specific level or from expanding at a rate higher than a predetermined percentage.
