WAEC 2020 Economics · Question 29

When the production possibility curve shifts outwards, the economy experiences

Options

  1. A.growth
  2. B.over-production
  3. C.inefficient use of resources
  4. D.under-production

Answer: A. growth

Explanation written with AI and checked against the answer key

Step 1: Analyze the question The question asks what an outward shift of the Production Possibility Curve (PPC) means for an economy.

Step 2: Explain the concept The PPC shows the maximum combinations of two goods an economy can produce when it uses all its resources fully and efficiently.

  • Points on the curve: resources are fully and efficiently used.
  • Points inside the curve: resources are underused or wasted (inefficiency or unemployment).
  • Points outside the curve: not attainable with current resources.
  • A shift of the whole curve outward: the economy's productive capacity has increased.

Step 3: Work through the options An outward shift happens when:

  • the quantity of resources increases (for example, new oil discoveries, a larger labour force),
  • the quality of resources improves (for example, better education and training),
  • technology improves.

All of these mean the economy can now produce more than before. This is economic growth.

  • A. Growth: correct. Productive capacity has expanded.
  • B. Over-production: this is a market surplus idea and has nothing to do with a PPC shift.
  • C. Inefficient use of resources: this is shown by a point inside the curve, not by a shift of the curve.
  • D. Under-production: this also relates to being inside the curve, not to the curve moving outward.

Step 4: Answer The correct option is A. growth.

Tip: Remember the difference between movement and shift:

  • Movement to a point inside the curve means inefficiency or unemployment.
  • Movement along the curve means a trade-off (opportunity cost).
  • Shift outward means economic growth.
  • Shift inward means economic decline.

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