Answer the following question given this paragraph: 

The warm, humid climate of the early Cambrian allowed life to expand and diversify. This brought the Cambrian Explosion. Life exploded both in diversity and in quantity!.


Q: What allowed life to expand and diversify during the early cambrian period?

 Choices:

- hot, dry climate

- cool, dry climate

- cool, humid climate

- warm, humid climate

A:
warm, humid climate
