Hyperinflation erodes money's purchasing power

Steps:

• Define hyperinflation as extreme inflation exceeding 50% monthly, causing rapid price increases.
• Identify core effects: money loses value quickly, disrupting exchange and savings.
• Evaluate choices for accuracy on price behavior and economic impacts.
• Select option matching rapid price rises and money's diminished role.

Why D is correct:

• Hyperinflation, per Cagan's definition (price increase >50% monthly), devalues currency so severely that money fails as a reliable medium of exchange, leading to barter or foreign currency use.

Why the others are wrong:

• A: Hyperinflation involves sustained rises, not fluctuations up and down.
• B: Prices rise, not fall; assets lose value due to currency devaluation.
• C: Fixed assets like real estate lose real value as money's worth plummets.

Final answer: D