The correct answer is C) Centrally planned.
A mixed economy is one that has elements of government involvement and free enterprise. This is the type of economy that the United States uses at this time.
A laissez faire system revolves around little/no government involvement in the economy. This system focuses on competition among businesses in order to benefit the consumer.
A free enterprise system is one in which private businesses make decisions about what products they will create and sell to citizens.
This shows that the command economy is the only correct answer.