Which of the following scenarios would cause a shift in the supply curve for wheat?

• A. A technological advancement in wheat harvesting equipment
• B. An increase in the price of wheat
• C. A change in consumer preferences for wheat products
• D. A decrease in consumer demand for wheat

Answer: (A)

Verified step by step guidance

1. Understand the difference between a movement along the supply curve and a shift of the supply curve. A movement along the supply curve happens when the price of the good changes, while a shift occurs when other factors affecting supply change.
2. Identify the factors that cause a supply curve to shift. These include changes in technology, input prices, number of sellers, expectations about future prices, and government policies.
3. Analyze each scenario: An increase in the price of wheat causes a movement along the supply curve, not a shift, because it changes the quantity supplied at different prices.
4. A change in consumer preferences or a decrease in consumer demand affects the demand curve, not the supply curve, so these do not cause a supply shift.
5. A technological advancement in wheat harvesting equipment improves production efficiency, reducing costs and increasing supply at every price level, which causes the supply curve to shift to the right.