Free Trade and Trade Protection (id: 46036cdda)

本题目来源于试卷: Free Trade and Trade Protection，类别为 IB经济学

[单选题]
Which of the following nm,timibi4a ug0)4z -arguments supports the theory of compargry8g9nrr. z.i b k4;jative 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

$\underset{‾}{\text{Explanation}}$:
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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