How could a country prevent a more efficient firm in another country from selling its televisions at a price below that of their country's firms?

The correct answer for the question that is being presented above is this one: "A country can prevent a more efficient firm in another country from selling its televisions at a price below that of their country's firms by t he interaction between competing producers, who attempt to make the highest possible profit, and consumers, who try to pay as little as possible ultimately determines price.