Concept:A free market distributes goods through the automatic signals of prices.
Explanation:Without government intervention, buyers and sellers are free to trade.
Demand and supply determine the market price of a commodity.
If demand rises, price increases, which encourages suppliers to offer more.
If supply exceeds demand, price falls, which encourages consumers to buy more.
These price changes direct resources and goods to where they are most wanted.
Thus, the price mechanism decides how commodities are allocated among people.
Answer:B. The operation of price mechanism.