On a production possibility curve, data points that fall outside of the curve represent an inefficient allocation of resources. a balanced allocation of resources. ideal production. a currently unattainable production

The answer is: a currently unattainable production
This happen due to either lack of materials, labor or capital. production possibility curve create a graphical representation of the combinations of goods and services an economy can produce. IWe use  production possibility curve in order to determine which amount of production would provide the best result for the economic growth.