Final answer:
A Communist economy is a command or planned economy where the government controls all means of production and plans for the types and quantities of goods that will be produced. They also set the prices for those goods.
Step-by-step explanation:
A Communist economy is best described as a command or planned economy, where the government owns and controls all means of production. In this type of economy, the government directly plans for and commands the types and quantities of goods that will be produced. They also set the prices for those goods themselves. The government's control over production planning and ownership of companies is a key characteristic of a Communist economy.