The southern half of a certain

Answer choices

1. A

   Possible7% picked this

   Dinosaurs inhabited the northern half of the region throughout the entire

   Dinos couldn't have been in the waterlogged southern half, but the north would be fine. It might have had some dry land where dinos could live.

   7%
2. B

   Possible9% picked this

   Plesiosaurs did not inhabit the southern half of the region during

   We know that Plesio's could have potentially inhabited the southern half, since it was covered by water and since they were swimmers. But it's also possible they lived elsewhere. We can't contradict that idea.

   9%
3. C

   Must Be True7% picked this

   Plesiosaurs did not inhabit the southern half of the region before

   We were actually told that Plesio's lived during the Cretaceous Period only! So prior to the Cretaceous Period (and afterwards), there were no plesiosaurs anywhere.

   7%
4. D

   Possible8% picked this

   Dinosaurs did not inhabit the northern half of the region during

   We don't have any idea if dinosaurs ever lived anywhere in this "certain region of the earth", so it's very possible they didn't inhabit the norther half of the region.

   8%
5. E

   Correct69% picked this

   Dinosaurs inhabited the southern half of the region throughout the entire

   Why this is right

   Yes, this is contradicted by the fact that during one part of the Mesozoic era, the Cretaceous Period, the southern half of the region was covered by water. Dinosaurs only lived on land. Thus dinosaurs could not have lived in the southern half of the region during the Cretaceous Period. Thus dinosaurs could not have lived in the southern half of the region throughout the entire Mesozoic era.

   Skill tested: Must be False · how this choice captures the argument's function is the move to repeat next time.

   69%