D) an inward shift of the production possibility frontier.
In economic analysis, the principle of marginal analysis refers to:
A) dividing large problems into smaller, more manageable ones.
B) the notion that a group’s problems can be effectively analyzed by focusing on only a
small subsample of the group.
C) the result that the optimal quantity of an activity is that at which marginal benefit is
equal to marginal cost.
D) the result that the optimal quantity of an activity is that at which the net benefit of
the representative, or marginal, individual is maximized.
Long-run equilibrium in perfect competition and in monopolistic competition are
similar because in both models, firms:
A) produce at the minimum point of the average total cost curve.
B) set price equal to marginal cost.
C) make zero economic profits.
D) have excess capacity.