The price mechanism

Analyze the question: The question asks what the price mechanism does. Each of options A to D describes one of its functions, and option E says it does all of them.

Explain the concept: The price mechanism (also called the market system) is how prices, set by the interaction of demand and supply, guide economic decisions without central planning. Prices act as signals and incentives. Its main functions are:

1. Regulating supply and demand: If the price rises, quantity demanded falls and quantity supplied rises. If the price falls, the reverse happens. Prices keep moving until the market reaches equilibrium.
2. Rationing consumers: Because resources are scarce, only people who are willing and able to pay the price get the goods. Price therefore rations goods among competing buyers.
3. Rewarding producers: High prices mean higher profits for efficient producers, which encourages them to produce more. Low prices signal them to cut back or leave the market.
4. Allocating scarce resources: Resources move toward the production of goods with high prices and profits, and away from goods with low prices. This answers the basic economic question of what to produce.

Step-by-step solution:

• Check A: the price mechanism adjusts supply and demand toward equilibrium, so it is true.
• Check B: the price rations goods to those who can pay, so it is true.
• Check C: profits reward producers who respond to consumer demand, so it is true.
• Check D: the price mechanism directs resources to their uses, so it is true.
• Since A, B, C and D are all correct, the answer is E.

**Answer: E, does all of the above.

Exam tip: When you see "all of the above" and you can confirm that at least three of the other options are true, pick it with confidence. For the price mechanism, remember "Signal, Ration, Reward, Allocate". Prices signal, ration, reward and allocate.