The market most likely to be characterized by oligopolistic competition in the united states is smartphone service providers.
An oligopoly is when there are few large firms operating in an industry. This is because there are high barriers to the entry and exit of firms into the industry. The smartphone service provider industry is dominated by five industries due to the high cost and regulations in the industry.
Here are the options to the question:
a) soybeans
b) pens and pencils
c) smartphone service providers
d) men's clothing
e) electrical service to the home
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