问题
单项选择题
According to the "invisible hand" principle, which of the following statements is least accurate（）
A. Competitive markets produce an optimal basket of goods and services.
B. Efficient allocation of productive resources occurs through competition.
C. The authority of the state, although not seen, must always be present in the market.
答案
参考答案：C
解析：
The "invisible hand" to which Adam Smith referred in The Wealth of Nations did not include any legal authority. Rather, Smith was describing the way that individual producers serve society’s interest by competing with one another to produce the goods and services that are valued most highly by final consumers, even though the producers do not have society’s interest explicitly in mind.