Answer:
D
Step-by-step explanation:
One of the reproductive strategies of terrestrial vertebrates is the ability of fertilized eggs to develop away from the body of water.
Water is very important for fertilization in aquatic organisms and one of the biggest challenges posed by migrating to the terrestrial environment is desiccation of the eggs. Terrestrial vertebrates are able to overcome these challenges by making fertilization of eggs internal and the ability of the fertilized eggs to develop away from the body of water.
The correct option is D.