Which event would shift the short-run supply curve for strawberries?

The event that would shift the short-run supply curve for strawberries is a strike by all farmworkers. A strike would directly affect the availability of labor necessary for harvesting strawberries, thereby reducing the quantity of strawberries that can be supplied to the market. This decrease in supply, represented by a leftward shift in the supply curve, occurs because the farms cannot operate at full capacity without available labor.

In contrast, a decrease in demand would not shift the supply curve itself but rather lead to a movement along it as prices adjust in response to lower demand. A technological advancement would typically lead to an increase in supply, shifting the curve to the right, as it enables more efficient harvesting. Similarly, a bad strawberry season would adversely impact the quantity supplied, likely causing a drop in supply due to reduced crop yields. However, the immediate event causing the supply curve to shift in this scenario is indeed the strike, as it temporarily disrupts production capacity.