Concept:The diagram shows the production possibility curve, also known as the production possibility frontier.Explanation:A production possibility curve illustrates the maximum output combinations of two goods that an economy can achieve using all its resources efficiently.It is typically drawn concave to the origin to show increasing opportunity cost.It is not a supply curve or a demand curve because those diagrams show the relationship between price and quantity.It is also not an indifference curve, as indifference curves represent consumer preferences and levels of satisfaction.Answer:B. Production possibility curve
