Answer:
Factors of production can be used in either widget or gizmo production, but some are more productive at producing widgets and some are more productive at producing gizmos
Explanation:
PPF is simply known as production possibilities frontier as it is a curve that shows the differences (variations) in the amounts that can be brought about (produced) of two products if both
are largely use or dependent on the same limited resource for their manufacture. It can also be called a transformation curve.