Answer :
Final answer:
Friedman believed that the underlying principle of the market mechanism is supply and demand, without any government interference. This principle allows producers and consumers to interact and negotiate trades to exchange goods.
Explanation:
Proponents of free-market economics believe that the underlying principle of the market mechanism, according to Friedman, is the concept of supply and demand. In this theory, the market forces of supply and demand, without any government interference, are considered the most effective way for markets to operate. The market mechanism allows producers and consumers to interact and negotiate trades, facilitating the exchange of goods.