Which of the following factors does NOT contribute to long-run aggregate supply growth?

• A. Enhancements in workforce education
• B. Improvements in technology
• C. Increases in population
• D. Short-term fiscal policies

Answer: (D)

The correct answer highlights the distinction between long-run factors affecting aggregate supply and those that only have short-term consequences. Long-run aggregate supply growth is primarily driven by structural changes in the economy such as improvements in education, technological advancements, and population increases. These factors expand an economy's capacity to produce goods and services over an extended period.

Enhancements in workforce education lead to a more skilled labor force, which in turn can increase productivity and contribute to potential output. Improvements in technology foster more efficient production processes and innovation, allowing businesses to produce more with the same or fewer resources. Increases in population provide a larger workforce and potentially greater consumer demand, further supporting economic growth.

In contrast, short-term fiscal policies, which can include government spending and tax adjustments, are typically aimed at addressing immediate economic fluctuations rather than fundamentally altering the economy's productive capacity. These policies primarily impact short-term aggregate demand rather than long-term aggregate supply, making them less relevant in the context of long-run economic growth. Therefore, they do not contribute to long-run aggregate supply growth.