is a competitive advantage that other companies have tried unsuccessfully to duplicate and have, for the moment, stopped trying to duplicate. Group of answer choices Sustainable competitive advantage Revealed competitive advantage Core competency advantage Comparative advantage

Sustainable Competitive Advantage.

Explanation:

A sustainable competitive advantage is something - an ability, an asset, an attribute - that is difficult for other companies to duplicate. That gives, of course, superiority to the company that detains this advantage over its competitors. A real-life example would be Coca-Cola's brand. It is a powerful brand that was built and consolidated over several decades. Having a powerful brand means customers prefer it over other brands.

b) to encourage free trade

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