Answer: Investor sentiment changes from enthusiasm to despair

## Explanation Let's analyze each option: **A. Investor sentiment changes from enthusiasm to despair** - This would likely cause a significant stock price change as it represents a major shift in market psychology and risk appetite. **B. The central bank raises interest rates in line with expectations** - Since this is already anticipated by the market, the impact would be minimal as it's already priced in. **C. The company confirms widely anticipated information about its new project** - Again, since this information was widely anticipated, the confirmation would not significantly move the stock price. **Correct Answer: A** - Changes in investor sentiment represent new, unexpected information that can dramatically affect stock prices, while anticipated events are already reflected in current prices.

Author: LeetQuiz Editorial Team