Answer:ased on the characteristics you provided:
Explanation:Breathe with lungs
Lay eggs
Ectothermic (cold-blooded)
Often have scaly skin that holds in water
The correct answer is:
Reptile
Reptiles fit all these criteria, as they breathe with lungs, are ectothermic, lay eggs, and have scaly skin that helps prevent water loss. Fish, mammals, and birds do not fit all these characteristics.