Answer:
d. a comparative advantage in capital goods.
Explanation:
I'm not sure how these numbers should go, but I think it should be:
              Capital Goods     Consumption Goods
Ironbridge           32                 40
Broseley             40                 80
Ironbridge's opportunity cost to produce 1 capital good = 40 / 32 = 1.25 consumption goods
Ironbridge's opportunity cost to produce 1 consumption good = 32 / 40 = 0.8 capital goods
Broseley's opportunity cost to produce 1 capital good = 80 / 40 = 2 consumption goods
Broseley's opportunity cost to produce 1 consumption good = 40 / 80 = 0.5 capital goods
Ironbridge has a comparative advantage int he production of capital goods (lower opportunity cost) while Broseley has a comparative advantage in the production of consumption goods.
Opportunity costs refers tot he extra costs or benefits lost resulting from choosing one activity or investment over another alternative. In this case,, if Ironbridge wants to produce 1 capital good, it will have to forego 1.25 consumption goods.