Final answer:
A 'bull' market refers to when stock prices are rising or expected to rise, while a 'bear' market indicates declining or expected to decline stock prices. 'Horse' is not applicable to market trends.
Explanation: The correct option : a
a 'bull' market is when there is a rise or expected rise in stock prices, and a 'bear' market is when there is a decline or expected decline in stock prices. The term 'horse' is not relevant in this context.
A bull market is characterized by optimism and investor confidence, leading to increasing stock prices. Historical examples include the period around 1995 when the Dow Jones Industrial Average (DJIA) broke 4000, and eventually in 2000 when it reached 12,000. On the contrary, a bear market occurs when prices decline and investor sentiment is negative, such as in 1998 when the market dropped 1200 points from its peak of 9,000.