Right choice is (a) Amphibia
The explanation: The amniotic egg was a developmental creation that enabled the principal reptiles to colonize dry land in excess of 300 million years back. Fishes and creatures of land and water must lay their eggs in water and along these lines can’t live a long way from water. Be that as it may, on account of the amniotic egg, reptiles can lay their eggs about anyplace on dry land.