Answer: A. Socialism
Explanation: Command economy is a characteristic of communist economies in which the government determines the volume, type and mode of production, types of services and relations in the economy. This implies that the state owns all the means of production and all its economic factors, although private property is also possible in socialism. Individuals in such an economy, of course, cannot determine and decide the way of production outside the government. An example of such economic relations in socialism is private landowners, besides state property, which mostly refers to agriculture, though there may be other branches of production. Socialism as such is a transitional form to communism.
