While the command form of an economy may appear in any of the other listed ones, in some cases as interferences and measures by the government, the rest are characteristic of a particular type of society and states. The traditional form of economy is determined by the custom of society, characteristic of traditional environments and arrangements, where the exact role of each participant is precisely defined, and there is a high degree of security and certainty. On the other hand, the market economy is characteristic for democratic, civil society, giving a much larger choice to citizens. This choice is reflected in the choice of goods, services, consumption, level of investment, if any of the principles of market economy is not violated, means that there is no fraud, coercion etc. Also, this type of economy is regulated by rules, by signing a contract, there are certain obligations, but there are essentially a large number of different choices, investments, etc. This type of economy carries a greater risk and uncertainty, but also a higher profit with proper investment, following and predicting sometimes unpredictable flows of the market economy.
The answer is: D.