Which of the following would NOT cause a shift in the supply curve?

When analyzing the factors that influence supply, it's essential to distinguish between movements along the supply curve and shifts of the supply curve itself. A change in the price of the good affects the quantity supplied but does not shift the supply curve. Instead, it results in a movement along the curve; as the price rises, suppliers are typically willing to produce more, and as the price falls, they produce less.

In contrast, changes in technology, the number of suppliers, and production costs all impact the overall supply available in the market. For instance, advancements in technology can enhance production efficiency, increasing supply, while an increase in the number of suppliers generally contributes to a larger market supply. Similarly, if production costs decrease, suppliers can produce more at every price level, prompting a rightward shift in the supply curve. Thus, it's clear that the price of the good itself is the only factor listed that does not cause the supply curve to shift; rather, it affects the quantity supplied along a static supply curve.