given a production possibilities frontier, when is it possible for a person to produce more of one good…

given a production possibilities frontier, when is it possible for a person to produce more of one good without sacrificing some production of the other good?\n\nchoose one:\n\na. never\n\nb. if the person is producing inside the frontier\n\nc. if the person is producing outside the frontier\n\nd. if the person is producing on the frontier
Answer
Brief Explanations:
The production - possibilities frontier (PPF) shows the combinations of two goods that can be produced given the available resources and technology. Points inside the PPF indicate that resources are not fully utilized. So, it is possible to produce more of one good without sacrificing the production of the other good when a person is producing inside the frontier. Points on the PPF represent efficient production where any increase in the production of one good requires a decrease in the production of the other. Points outside the PPF are currently unattainable with the given resources and technology.
Answer:
B. if the person is producing inside the frontier