Final answer:
Domestic producers benefiting from free trade likely makes the country a net exporter of the good they produce, implicating comparative advantage and lower opportunity costs.
Step-by-step explanation:
If the domestic producers of a good benefit from free trade, it suggests that the country is a net exporter of that good. This is because domestic producers would gain from selling their goods internationally if they are competitive on a global scale. Comparative advantage plays a vital role in this case. A country benefits from specializing in the production of goods for which it has a lower opportunity cost compared to other countries, even if it does not have an absolute advantage in producing them.
Free trade allows countries to focus on manufacturing goods where they have a comparative advantage. Thus, if domestic producers are benefiting, it implies they are competitive enough to sell their products internationally, likely due to lower production costs or higher quality, which makes them net exporters of those goods.