GMAT Critical Reasoning (CR) | Re: Paleontologist: About 2.8 million years ago, many species

IMO A
All other options can be safely rejected
In B author does not opposes the position.
In C the first is not challenged by the author
D is also out as it is not a conclusion .
E is out as there is exceptional cases


Sent from my ONE E1003 using GMAT Club Forum mobile app

---