本题目来源于试卷: IB Economics Unit 4.1: Global Economy Free Trade & Trade Protection，类别为 IB经济学
[单选题]
Which of the following arguments bv9 1vla5a rh4n3fhzf,u i03rsupjf0(bhk g brzk 61hm41s y:e)rports the theory of comparative advantage?
A. Technology is fixed, so trade is necessary
B. Economies of scale make production more efficient
C. Specialisation helps to maintain structural stability in a society
D. Factors of production are perfectly mobile within a country
参考答案: B
本题详细解析:
B Explanation:
If a country has a comparative advantage, it specialises in the production and export of one commodity, and can benefit from economies of scale. Economies of scale lower the cost of production. Options A and D are incorrect statements: - Option A is incorrect because technology keeps changing.
- Option D is incorrect as geographical and occupational barriers adversely affect mobility of resources.
Option C is a true statement describing a disadvantage of comparative advantage: specialisation can limit structural changes in a society.
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