How are reptiles, birds and humans most closely related of the characteristics below ?

Question

A. they are caudals

B. they are invertebrates

C. they are protosomes

D. they are aminotes

Answer 1

Amniotes is the answer you are looking for! Organisms that are classified like this have their egg surrounded by amniotic fluid which is an adaptation that allowed the first reptiles to fully transition to land. Hope this helps!!