Question: In which market structure-monopoly, oligopoly, monopolistic competition, or perfect competition-would you place each of the following products? Why?
a. Retail market for electricity
b. Principles of economics textbooks
c.principles of economics by N. Gregory Mankiw
d. Photographic film
e. Retail market for gasoline
f. Restaurants in a large city
g. Auto tires
h. Trash collection
i. Legal services in a metropolitan area
J. Breakfast cereal
k. Gold bullion
l. Air travel from anyone airport