Final answer:
Price controls can decrease the quantity of crops demanded and create inefficiencies in the market.
Step-by-step explanation:
Price controls have an effect on the amount of crops demanded. When the government sets the price of a crop lower than the equilibrium price determined by the forces of demand and supply, it can lead to a decrease in the quantity of crops demanded. This is because low prices decrease farm production, as seen during China's 'Great Leap Forward' in the late 1950s when 30 to 40 million people died of starvation due to artificially low food prices.
Price controls immobilize the price messenger and deprive the economy of critical information. Without this information, it becomes difficult for both buyers and sellers to react effectively to changes in demand and supply, leading to potential shortages and inefficiencies.