Answer:
Simultaneous Shifts in Demand and Supply
In this market, the change in supply may have resulted from:
b. an improvement in technology.
Explanation:
An improvement in technology is the only correct option that can cause the change in supply from S1 to S2. Wage increases for the workers increase the cost of production, which can decrease sales volume. Similarly, a decrease in the number of sellers will most likely reduce sales volume instead of increasing it.