Which economic system best describes the United States?

a command system
a mixed system
a free market system
a traditional system

The United States can be best described as a mixed system or a free market system. While the U.S. has elements of government regulation and intervention in certain sectors of the economy (such as healthcare and banking), it is primarily characterized by the principles of free market capitalism, where individuals and businesses have the freedom to make their own economic choices and engage in voluntary transactions.