Which of the following can shift the aggregate supply curve to the left?

• A. Decreasing production costs
• B. Increased labor productivity
• C. Natural disasters affecting supply chains
• D. Advancements in technology

Answer: (C)

The correct answer is the scenario involving natural disasters affecting supply chains. When natural disasters occur, they can cause significant disruptions to the production processes and supply chains of businesses. This disruption can lead to a decrease in the availability of goods and services, as companies may struggle to source raw materials, components, or labor. As a result, the overall capacity of the economy to produce goods and services diminishes, shifting the aggregate supply curve to the left.

In contrast, decreasing production costs and increased labor productivity typically foster an environment conducive to increasing aggregate supply. When production costs decrease, businesses can produce more at lower expenses, potentially shifting the aggregate supply to the right rather than left. Similarly, advancements in technology often lead to more efficient production methods, enhancing productivity and also contributing to a rightward shift in the aggregate supply curve. Therefore, the impact of natural disasters provides a clear example of how external shocks can adversely affect supply, resulting in a leftward shift in the aggregate supply curve.