The correct answer is highly differentiated consumer goods. Firms that sell extremely differentiated shopper products square measure additional possibility to pay an outsized share of their revenue on advertising.
Excellent competition has the biggest variety of suppliers. A natural monopoly is a happening of monopoly thanks to high fastened and start-up value or use of some technological completely different that keeps the opposite corporations out of the market that the firm that gives electricity to all or any homes contains a natural monopoly.
A natural monopoly exists in a very explicit market if one firm serves that market at a lower value than any combination of 2 or additional corporations.
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