Consumers and producers freely make economic decisions in a economic system. however, the government tells producers how and what to produce in a economic system. a. command, mixed b. free-market, command c. command, free-market d. mixed, free-market

You're answer should be B. It is the most logical and fitting answer of the 4.

The correct option is B.
In a free market  economic system the government imposes few or no limitation on manufacturers and consumers. In this type of system, the producers are the ones who determine what to produce, how to produce and for whom to produce. They also determine the price of their products. The command economic system on the other hand is principally operated by the government. The government decide the products to be produced, for whom they are to be produced and the method of production that will be used. The government also determines the price of the products.

Humans increased food production by farming.

The answer to this question is b