Final answer:
The event that would confirm the Theory of Comparative Advantage is when a country exports goods in which it has a lower opportunity cost.
Step-by-step explanation:
The event that would confirm the Theory of Comparative Advantage is b) A country exporting goods in which it has a lower opportunity cost.
Comparative advantage is the ability of a country to produce goods at a lower opportunity cost compared to other countries. By specializing in and exporting goods in which it has a lower opportunity cost, a country can benefit from trade and increase its overall output and welfare. This is because the country can produce more of the goods it is efficient in and trade them for goods produced by other countries.
For example, if Country A can produce 10 units of Product X or 5 units of Product Y with the same amount of resources, while Country B can produce 8 units of X or 2 units of Y with the same resources, Country B has a lower opportunity cost in producing Product Y. Therefore, if Country B specializes in producing and exporting Product Y, it can benefit from trade with Country A and allocate more resources to produce and export Product Y.