A shift to the left of a supply curve is caused by:

Question

Quizplus · Accepted Answer

An increase in the returns from other supply possibilities, such as higher profits or better returns on investment, would incentivize sellers to switch to producing those goods instead, causing a decrease in supply of the original good and a shift to the left of the supply curve. Increases in the number of sellers (A) or buyers (D) would not directly impact the supply curve. A technological improvement (B) would result in a shift to the right of the supply curve, as it would allow for more efficient production and increased supply at each price point.

A Shift to the Left of a Supply Curve Is