Inefficiency from Underutilized Resources

Steps:

• Recall that the production possibility curve (PPC) represents the maximum output combinations using all resources efficiently.
• Points on the PPC indicate full employment and efficient allocation; inside points show idle resources.
• Inefficiency means society isn't achieving the highest possible output without trade-offs.
• Evaluate choices to identify the core reason for inefficiency.

Why B is correct:

• The PPC boundary defines efficient production where increasing one good requires sacrificing another; inside the curve, resources are underused, allowing more of one good without reducing the other, per the law of increasing opportunity cost.

Why the others are wrong:

• A: Leisure levels don't define PPC inefficiency, which focuses on resource utilization, not personal choices.
• C: Wrong input mix could occur on the PPC; inside points indicate overall underutilization, not just mix.
• D: Shortages or excesses relate to market imbalances, not the resource underuse central to PPC inefficiency.

Final answer: B