During which event did the Flash Crash occur?

The Flash Crash occurred on a specific day in 2010, namely May 6, 2010. This event was characterized by a sudden and severe drop in stock prices, which happened over a very short period, followed by a rapid recovery. The crash was attributed to a combination of automated trading systems and market conditions at that time. Recognizing the precise date is important because it helps to contextualize the event within the broader financial landscape and understand the implications it had on trading technologies and market regulation that followed. Identifying the specific day also enables analysts and researchers to study the factors leading up to the crash and the immediate aftermath, making C the correct selection. The other options relate to significant financial periods but do not specify the actual occurrence of the Flash Crash itself.