WAEC 2019 Economics · Question 38
Supply of agricultural products is likely to be elastic in the
Options
- A.intermediate period
- B.long-run
- C.market period
- D.short-run
Answer: B. long-run
Explanation written with AI and checked against the answer key
Step 1: Analyze the question The question asks when the supply of agricultural products is most likely to be elastic, meaning when quantity supplied can respond strongly to a change in price.
Step 2: Explain the concept Elasticity of supply depends heavily on time, because producers need time to change output.
- Market period (very short run): Supply is fixed. Farmers have a harvest already in store and cannot add to it, so supply is perfectly inelastic.
- Short run: Some inputs, like land and farm size, are fixed. Output can only change a little, so supply is inelastic.
- Long run: All factors of production can be changed. Farmers can clear more land, plant more crops, wait for the crops to mature, and adopt new technology. Supply becomes elastic.
Step 3: Apply it to agriculture Agricultural production takes a long time because of planting seasons, growing periods, and the maturation of crops (such as cocoa or oil palm) and livestock. If the price of yam rises today, farmers cannot produce more yam immediately. They must wait for the next planting season. So supply is inelastic in the market period and short run, and becomes elastic only when enough time has passed for full adjustment, which is the long run.
Step 4: Check the options
- A. Intermediate period: Some adjustment is possible, but not full, so supply is still relatively inelastic.
- B. Long-run: Farmers can fully adjust output, so supply is elastic. ✔
- C. Market period: Supply is fixed (perfectly inelastic).
- D. Short-run: Supply is inelastic because of fixed inputs.
Answer: B. long-run
Exam tip: Remember "More time = more elastic." Market period is the most inelastic, and long run is the most elastic. For agricultural products, always think of growing seasons and gestation periods as the reason for inelastic supply in the short term.
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