What effect might the government have on​ oligopolies? in​ oligopolies, the government might
a. impose barriers to entry with a​ free-trade agreement with another country to promote competition.
b. impose barriers to entry with occupational licensing comma where a license is required to provide a good or serviceoccupational licensing, where a license is required to provide a good or service.
c. promote competition by allowing large firms to lobby state legislators and members of congress for favorable laws.
d. impose barriers to entry with a​ copyright, which allows only the government to supply a good or service.
e. promote competition with a patent comma which grants exclusive rights to product a gooda patent, which grants exclusive rights to product a good?

Answer :

in oligopolies, the government might impose barriers to entry with a tariff to limit foreign competition.
By doing this, the price of products that created by foreign competitors will be higher compared to the local products which give the local companies more opportunity to win the competition in national market.