Final answer:
The opportunity cost of producing additional computers is lowest when the resources used in computer production are easily replaceable, as it allows for a flexible reallocation of resources with minimal production sacrifice of other goods, consistent with the principle of comparative advantage.
Step-by-step explanation:
In the context of opportunity cost and comparative advantage, the situation in which the opportunity cost of producing additional computers is the lowest is when the resources used in computer production are easily replaceable (Option B). Resources that are easily replaceable allow for a more flexible allocation, facilitating the production of one good with a minimal sacrifice of the production of another good. This aligns with the principle of comparative advantage which suggests that a country should produce goods for which it has the lowest opportunity cost.
For instance, if Zambian companies need the same labor to produce copper and corn but copper requires more hours, the opportunity cost for producing copper is higher than for corn. Similarly, if a plant’s production possibilities curve is the flattest for snowboards, as indicated in the provided scenario, it means that the opportunity cost for snowboards is the lowest for this plant, and thus, it has a comparative advantage in producing snowboards. Similarly, if Germany has a lower opportunity cost for producing video cameras compared to Poland, then Germany has a comparative advantage in video cameras.