PPC Shows Opportunity Costs and Efficiency

Steps:

• Identify current position on PPC at combination 1, representing efficient production of two goods.
• Analyze choices for movements: inward shift indicates inefficiency or resource loss; outward shows growth; along curve shows trade-offs.
• Evaluate impacts: moving inside PPC reduces total output; beyond is unattainable without tech advance.
• Select option matching efficient reallocation without curve shift.

Why B is correct:

• B describes moving along the PPC from combination 1, reflecting opportunity cost via reallocation of resources per the PPC definition.

Why the others are wrong:

• A: Suggests inward shift, implying inefficiency or resource depletion, not possible at current efficient point.
• C: Indicates outward shift, requiring economic growth or tech change, unsupported here.
• D: Positions inside PPC, showing underutilization of resources, contradicting efficient combination 1.

Not enough information for full choice details, but B aligns with standard PPC principles.

Final answer: B