Question on May 2014 SAT writing section.

Test Preparation SAT Preparation
1
  1. Ants, butterflies, and bees first appeared during the Cretaceous period, the more recent of the three geologic periods during which dinousaurs lived. Answer: more recent --> i dont understand why this is the answer
2

You use “more” when comparing only 2 things, and “most” when you are comparing more than 3+!

3

I think you have an error in your post. Can you repost the question with all the answer choices?