Context: Reptiles have scaly, waterproof skin. Most reptiles live on land.
Reptiles are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
An American alligator is an example of a reptile.
Select the reptile below.
A. water buffalo
B. cobra
C. Japanese tree frog
D. common toad
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

B