Answer:
The correct answer is: demand curve; option C.
Explanation:
A price floor is the lowest limit fixed on the price of a product. It is imposed by the government to protect the producers.
A binding price floor is fixed above the equilibrium market price. It is a horizontal line above the equilibrium price.
The consumers are willing to purchase the quantity where the price floor intersects the demand curve.
There is an excess supply as firms supply more at a higher price while the consumers demand less.
Since there is a difference between the equilibrium price and what the consumers are willing to pay, there exists a deadweight loss. This deadweight loss is the triangular area below the demand curve and above the supply curve between equilibrium quantity and price floor quantity.