One difference between a traveler's check and a demand deposit is that:
a. a traveler's check is accepted almost as widely as currency, while a demand deposit has to be converted into cash before making transactions.
b. a demand deposit is accepted almost as widely as currency, while a traveler's check has to be converted into cash before making transactions.
c. a traveler's check has a longer

There has been catch-up among ________, but there has not been catch-up among ________

A) developing countries such as Niger; industrialized countries such as Japan B) developing countries such as Niger; all countries of the world C) industrialized countries such as Japan; all countries of the world D) all countries of the world together; industrialized countries such as Japan

Firms in monopolistic competition and perfect competition typically

a. are price takers b. produce identical products c. earn zero economic profit in the long run d. face a downward-sloping demand curve e. face an upward-sloping total revenue curve at all rates of output