A production possibilities frontier: A. shows the market for a good or service. B. shows how participants in the market are linked.

Shows the maximum attainable combinations of two goods that may be produced with available resources.

Explanation:

PPF stands for Production possibility frontier, which is a graph that is defined or indicates the numerous possibilities of the production of the two commodities or goods, when the resources are fixed.

This graph is referred or acknowledged as the product transformation curve or the production possibility curve.

Therefore, it is defined as the graph which states the maximum combinations of 2 goods which could be attainable, that might be produced with the available resources.

Note: The options are missing so providing the direct answer.