The adaptation is most likely the fact that reptiles can lay eggs on land. Amphibians can only lay eggs in the water, which means in order to reproduce they must be near a safe body. Reptile eggs contain water inside of them, so the eggs can hatch on the land instead of developing in the water.
(For USATestprep) A. The development of a protective coating on the egg.
Explanation:
The development of a protective coating on the egg.The egg also contains an amnion full of fluid, which keeps the animal in its own 'pond', so as not to dry out.