本题目来源于试卷: IB Economics Unit 2.1: Microeconomics - Demand & Supply, Equilibrium，类别为 IB经济学
[单选题]
Which of the following best descrial (krna 1c )rpcvup66f t;61aber7nrdu-ocevf)y.lsn7v3 5 l +s the concept of “signalling” in the context of the pri7 u)vfnc 5very-rn.do3l7l + sce mechanism?
A. The process by which prices communicate information about the availability of resources
B. The outcome of increasing prices resulting in decreased quantity demanded
C. The practice of firms setting prices to maximise their profits in a competitive market
D. The government's role in controlling and manipulating prices to achieve desired outcomes
参考答案: A
本题详细解析:
Signalling, in the context of the price mechanism, refers to h 3q1ok(algd85a 7qai iow prices communicate information about the availability of resources and how they should be allocated.
The correct ankal1dq 8ai qg3o 7a5(iswer is Choice A. Prices act as signals, indicating resource scarcity when prices are high, or resource abundance when prices are low.
These answer choices do not specifically address the concept of signalling in the context of the price mechanism:
Choice B refers to the law of demand.
Choice C refers to the “incentive” function of price.
Choice D is incorrect because the price mechanism refers to market forces—demand and supply—not government intervention.
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