An important evolutionary step for reptiles was ________.
A)the development of shell-covered eggs
B)the growth of scales from armor plating
C)lungs that could hold air
D)the formation of a true spine

Question

Quizplus · Accepted Answer

The development of shell-covered eggs allowed reptiles to lay their eggs on land, which freed them from dependence on water for reproduction and was a key adaptation for life on land.

An Important Evolutionary Step for Reptiles Was ________