Answer: True
Step-by-step explanation:
Opportunity costs for Latvia:
Opportunity cost of producing fish = 1/2 = 0.5 bushels of grain
Opportunity cost of producing grain = 2/1 = 2 fish
Opportunity costs for Estonia:
Opportunity cost of producing fish = 2/3 = 0.67 bushels of grain
Opportunity cost of producing grain = 3/2 = 1.5 fish
Latvia has a lower opportunity cost in the production of fish while Estonia has a lower opportunity cost in the production of grain. Competitive advantage refers to having a lower opportunity cost in the production of a good.
Both countries can therefore gain from trade if they traded in goods they have a competitive advantage in.
Latvia would gain if they traded fish for grain and Estonia would gain if they did the reverse.