They appear larger than they really are.
Amphibia,
Reptilia, Aves, and Mammalia are included in the group Tetrapoda. The
correct answer between all the choices given is the second choice. I am hoping
that this answer has satisfied your query and it will be able to help you in
your endeavor, and if you would like, feel free to ask another question.
HOPE THIS HELPED!!! XD
The scientist you're looking for is an anthropologist.
It's called appendages if that is what you need
