Which Is Not a True Statement About Mass Extinction Events

Multiple Choice

Which is not a true statement about mass extinction events?

A) Many 20th century geologists did not believe that Earth experienced catastrophic extinction events but rather the life on Earth gradually died off and the rocks containing this evidence had not been discovered yet
B) Once geologists could travel more freely across Earth to study rock layers, they discovered that fossiliferous rocks of appropriate ages to fill the gaps were readily available to study
C) Evidence in the rock record indicated that rapid mass extinction events have occurred at least five times throughout geologic past
D) The mass extinction event at the end of the Permian Period represents the most dramatic extinction event