The most likely explanation for any mass extinction event is:

Question

Quizplus · Accepted Answer

Rapid environmental change, such as climate change or asteroid impacts, is the most likely explanation for mass extinction events. Other factors, such as loss of genetic diversity or coevolution, may contribute to some extinctions but are not typically the primary cause of widespread extinctions. While human activity can cause extinctions, it has not yet been the primary cause of a mass extinction event.

The Most Likely Explanation for Any Mass Extinction Event Is