Answer:
Italy has comparative advantage in production of stained glass
Sweden has comparative advantage in pounds of fish.
Italy can gain from trade if it receives more than 4 pounds of fish for stained glass.
Sweden can gain from the trade if it receives more than 1/10 stained glass for every pound of fish.
d. 6 pounds of fish per pane of stained glass.
Explanation:
Italy and Sweden both countries can produce stained glass and pounds of fish. Italy can produce 4 pounds of fish per pane of stained glass while Sweden can produce 10 pounds of fish per pane of stained glass. This means Italy has comparative advantage in production of pane of stained glass while Sweden has comparative advantage in pounds of fish.