Answer:
The option is C is correct
Step-by-step explanation:
Herd instinct refers to an inclination in people to think or reason like the majority.
When investors follow a herd instinct it simply mean that they invest in something simply because everyone is doing it. this is to say that an investor or investors is ready to take certain risk in any business that is seen as profitable on the long run or time period.
If the business is profitable and is seen as a good investment, in which everyone or investors are actively participating on it. other investors will key into the idea.