Which production possibilities frontier (PPF) reflects increasing opportunity costs? PPF 1 PPF 2 PPF 3 PPF 4

PPF 4

Explanation:

Actually, PPF is meant to have a concave curvature when opportunity cost tends to rise. This can happen as a result of the fact that factors of production can be used in either widget or gizmo. Some of the factors of production can be more productive in widget.

The production possibilities frontier is a graph which shows the combination of two goods that can be manufactured with resources that are available.

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