The difference between laying eggs in reptiles and amphibians is B. REPTILES LAY THEIR EGGS ON LAND AND AMPHIBIANS LAY THEIR EGGS ON WATER.
Amphibians can live in both land and water. The first part of their life development must be lived in water, as they age, they grow lungs which help them breathe on land. They lay their eggs on water because their eggs are covered by soft, gel like texture.
Reptiles only live on land and lay their eggs on land. Reptiles have amniotic eggs which are contained in a hard leathery shell. Some reptiles keep their eggs inside their bodies until they hatch, this is to protect the eggs from predators and other threats found on land.