The viewpoints of macroeconomics include ().

The views of macroeconomics include ().

A. Markets should be organized in a laissez-faire manner

B. State intervention is necessary for the economy to function

C. Markets should rely solely on the "invisible hand"

D. Demand and supply can reach equilibrium and lead to a clearing of the market

Correct Answer：B

B. The market should rely solely on the "invisible hand.