Answer:
is the author an expert, who wrote the info, does the info seem reasonable, is the info given from a specific pov
Explanation:
whether you agree or not does not determine something's credibility
Answer:
D. The Ricardian model assumes labor is perfectly mobile
Explanation:
This model assumes that labor is perfectly mobile, tech is constant, and markets are perfectly competitive. It was developed by David Ricardo in his classical theory of comparative advantage which explains why countries engage in international trade even though their production may be more efficient than its trade partners. The comparative advantage of countries were explained and based on these assumptions.