10) Economists have long debated whether there is a significant loss of well-being to society in
markets that are monopolistically competitive rather than perfectly competitive. Which of the
following offers the best reason why some economists believe that monopolistically competitive
markets are less efficient than perfectly competitive markets?
A) In contrast to perfectly competitive markets, neither allocative efficiency nor productive
efficiency are achieved in monopolistically competitive markets.
B) In contrast to perfectly competitive markets, firms in monopolistically competitive markets
earn economic profits in long-run equilibrium.
C) In contrast to perfectly competitive markets, firms in monopolistically competitive markets do
not produce where price equals average total cost in long-run equilibrium.
D) In contrast to perfectly competitive markets, firms in monopolistically competitive markets
can charge a price greater than average total cost in the short run.
11) Economists have long debated whether there is a significant loss of well-being to society in
markets that are monopolistically competitive rather than perfectly competitive. Which of the
following offers the best reason why some economists believe that monopolistically competitive
markets benefit consumers despite any loss of well-being?
A) Although consumers may pay a price greater than marginal cost for a product, the product is
produced at the minimum average total cost.
B) Although consumers may pay a price greater than marginal cost and the product is not
produced at minimum average total cost, they benefit from being able to buy a differentiated
product more closely suited to their tastes.
C) Consumers pay a price equal to the marginal cost of producing a product, even though it is
not produced at the minimum average total cost.
D) Consumers are better off choosing from a variety of differentiated products, even though
product differentiation causes barriers that restrict entry into monopolistically competitive
markets.