Answer: Option D.
Amphibians have scales.
Explanation:
Amphibians are cold blooded animals and require water for their survival. Examples include frogs , toads, salamander.
Amphibians undergo metamorphosis i.e they start their life in water and continue on land as adult.
They have moist skins which help them to absorb water and oxygen. Their skin is scaleless. They lay unshelled egg. They have four limbs. They lay their eggs in water and fertilization also occur in water.
