Answer:
This is an example of market economy (B)
Step-by-step explanation:
The market economy can only exist in nations were the economy is not regulated by the government at all.Only supply and demand control the economy.
In planned economy or on mixed economy nations, the government interfere on the laws of economics.
In case of a socialist government, the nation regulates absolutely everything regarding the laws of economics.
Examples of mixed economy are most nations in Latin America, such as Argentina, Colombia, Peru, etc.
Examples of planned economy are Cuba and North Corea, while China evolved from a socialist planned economy to a mixed economy nowadays.