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.