For the first time in 16 years, the presidential election of 1992 saw
a) a landslide victory.
b) a democrat win the election.
c) a third-party candidate for president.
d) a woman was a candidate for vice-president.

The best and most correct answer among the choices provided by the question is the second choice "a Democrat won the election"

It was held on Tuesday, November 3, 1992. There were three major candidates: Incumbent Republican President George H. W. Bush; Democratic Arkansas Governor Bill Clinton, and independent Texas businessman Ross Perot. ... The election was a significant realigning election after three consecutive Republican landslides.

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high entry costs prevent new producers from entering the market.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.

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