If Country A can produce 10 units of wine or 5 units of cheese with the same resources, and Country B can produce 6 units of wine or 2 units of cheese, which country has a comparative advantage in producing cheese?

To determine which country has a comparative advantage in producing cheese, we need to look at how much cheese each country gives up to produce wine. In Country A, if it chooses to produce one unit of cheese, it gives up producing 2 units of wine because it can make 10 units of wine or 5 units of cheese. In contrast, Country B gives up 3 units of wine to produce one unit of cheese since it can make 6 units of wine or 2 units of cheese. Since Country A gives up fewer units of wine than Country B to produce cheese, Country A has a comparative advantage in cheese production. Therefore, Country A should focus on making cheese while Country B should focus on making wine to maximize efficiency.