B-a Combination of individual choice and government protection.
A Mixed Economy is an economic system where the government intervenes to a certain extent and the people has freedom of choice and other liberties. In this type of system, the private property is protected as well as a certain level of economic freedom of the individual, and only certain economic activities are interfered by the government, usually to achieve social aims. The laws of supply and demand are the ones that determine prices and not the government. The duty of this latter is to protect the people and the market to a certain extent.