According to our reading, how did George Cuvier account for extinctions in nature?

A) Extinctions never occur--there are unexplored parts of the globe where organisms that appear to have gone extinct may still live. B) Extinctions occur when the slow adaptation of organisms over time to their environment is not quick enough to help them respond to changing conditions. C) Extinctions occur at random, they do not reflect God's will. D) Extinctions are due to catastrophic events.