In economics, what term describes a prolonged period of sluggish economic growth and high unemployment coupled with high inflation?

The description includes three key elements:

• Sluggish economic growth (stagnation)
• High unemployment
• High inflation

• A. Hyperinflation: This refers to an extremely rapid and out-of-control increase in prices. While it involves high inflation, it doesn't necessarily include sluggish growth or high unemployment as defining characteristics.
• B. Deflation: This is a decrease in the general price level, which is the opposite of inflation.
• C. Recession: This is a significant decline in economic activity, characterized by sluggish growth and high unemployment. However, a recession typically involves low or even negative inflation, not high inflation.
• D. Stagflation: This term is a portmanteau of "stagnation" and "inflation." It specifically describes an economic condition characterized by slow economic growth (stagnation), high unemployment, and rising prices (inflation). This perfectly matches all three conditions described in the question.

The final answer is $\boxed{\text{D. Stagflation}}$