Question

in the united states, which type of industry is often considered part of an oligopoly? electric companies cell phone carriers mail delivery services denim companies

Explanation:

An oligopoly is a market structure with few large - scale sellers. In the US, cell phone carriers are a well - known example as a small number of major companies dominate the market. Electric companies are often monopolies or regulated monopolies. Mail delivery is mainly a government - run service (USPS) with some competition, not an oligopoly. Denim companies are in a more competitive market with many players.

Answer:

B. cell phone carriers