In which group did the amniotic egg first evolve?

A) Amphibians
B) Birds
C) Reptiles
D) Mammals
E) Frogs

Amniotic Egg

An egg that contains amniotic fluid to protect and hydrate the embryo; a key adaptation for life on land found in reptiles, birds, and mammals.

Evolve

The sequence by which distinct living species are theorized to have evolved and expanded from prior versions across the earth's historical span.