本题目来源于试卷: IB Economics Unit 2.5: Microeconomics - Market Failure，类别为 IB经济学
[单选题]
Defense and security are botaw a-a5m,i-ax h______and ___a0oyp 2ybwxtt8j7o65b e46n p___, and are classic examples of _____goods provided by governments. Military forceso674 5btb2p8wy jayx0e6t pno protect a nation's citizens and their interests, regardless of individuals' contributions to defense funding.
A. excludable, non-rivalrous, demerit
B. non-excludable, rivalrous, demerit
C. excludable, rivalrous, private
D. non-excludable, non-rivalrous, public
参考答案: D
本题详细解析:
D Defense and security are public goods that are non-excludable and non-rivalrous, meaning it's difficult to exclude people from benefiting from the good and one person's consumption does not lessen the amount of the good available to everyone else. Choices A, B, and C do not correctly complete the sentence.
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