Final answer:
The government of Ghana can implement a pricing policy to ensure that domestic consumers pay exactly $2 per pound for apples by offering a $1 subsidy per pound purchased or by importing apples from South Africa and selling them at $2 per pound.
Step-by-step explanation:
The government of Ghana can implement a pricing policy to ensure that domestic consumers pay exactly $2 per pound for apples. One option is to offer a $1 subsidy to each consumer for every pound of apples purchased. This subsidy will effectively reduce the price paid by consumers from $3 to $2 per pound, making it equal to the world price.
Another option is for the government to import apples from South Africa at $2 per pound and sell them directly to consumers at the same price. Both of these options will enable domestic consumers in Ghana to pay exactly $2 per pound for apples.