The highest mountain in antarctica is a. mt. uluru b. mt. cook c. mt. kosciuszko d. mt. erebus

The answer is none of the above. The highest mountain in Antarctica is Vinson Massif with 16, 050 ft. tall. Mt. Uluru and Mt. Kosciuszko are mountains found in Australia (Mt. Kosciuszko being the highest in Australia). Mt. Cook is found on New Zealand (and the highest mountain in New Zealand). The closest answer that can be found in the selection is the Mt. Erebus, although it is the second-highest VOLCANO in Antarctica.

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.

The answer should be d.