14) The economy’s marginal social benefit curve for a public good is equal to the ________.
A) horizontal sum of the individual demand curves
B) vertical sum of the individual marginal benefit curves
C) horizontal sum of the individual marginal benefit curves
D) vertical sum of the individual supply curves
15) The construction of the economy’s marginal social benefit curve for a public good reflects
the fact that
A) all the individuals can consume the same unit of the good.
B) more than one supplier can provide the good.
C) the same unit of the good cannot be simultaneously shared by more than one person at a time.
D) the government can supply a public good at a lower cost than can a private supplier.
16) The economy’s marginal social benefit curve for a public good is calculated by adding the
A) marginal cost of all the suppliers at each quantity.
B) quantities supplied by all the suppliers at each price.
C) quantities demanded by all the individuals at each price.
D) marginal benefits of all the individuals at each quantity.
17) Long Beach Island, off the coast of New Jersey, is considering building a sand barrier to
protect the houses on the island from future hurricanes. The marginal social benefit of the barrier
is equal to the
A) marginal private benefit of the person who benefits the most from the barrier.
B) marginal private benefit of the person who benefits the least from the barrier.
C) sum of the marginal private benefits for anyone who benefits from the barrier.
D) difference between the marginal private benefit of the person who benefits the most and the
person who benefits the least from the barrier.