the most common economic system in the world is a\nclosed economy.\ncommand economy.\nmixed market…

Brief Explanations:

A mixed - market economy combines elements of a market economy (private ownership and free - market forces) and a command economy (government intervention). Most countries today have a system where both private businesses operate and the government has a role in regulation, public services, etc. Closed economies are rare as they limit international trade. Command economies are less common now. Traditional economies are more prevalent in less - developed and rural areas.

Answer:

C. mixed market economy.