Reptiles

Question
Dear BPC, My name is Joyce LaBay and I'm doing a science project on reptiles. I just wanna know what is the rarest reptile in the world? I think I narrowed it down to these four reptilia: Antiguan Snake, Blue Iguana, Beaded Lizard, and Komodo Dragon. I just wanna know which one is the rarest out of those four or is there a rarer animal I should be looking up. Please reply ASAP.
     Animal Lover: Joyce LaBay

Answer
There is a Caribbean Iguana, named after the island it lives on which I think is more endangered than a couple of the ones you've listed (beaded lizard and Komodo).  Also check Tuataras for their status as well.  Best advice I have for ya, not a subject I know tons about.  Good Luck!