How changes in total demand may increase the utilisation of resources and GDP – resulting in a movement from inside toward the PPC.
Consequences of protection: Effectiveness of protection and its impact on the home country and its trading partners.
Influences to include demand for the product, the price of different factors of production, their availability and their productivity. The reasons for adopting the different forms of production and their advantages and disadvantages. The difference between, and influences on, production and productivity.