Fertilized eggs which develop inside the female's body: do not have shells
contain their own food
do not grow until birth
are not fertilized

A.do not have shells

Explanation: The type of fertilization in which the egg is fertilized inside the body of the female is called internal fertilization. There are generally three types of internal fertilization: oviparity, ovoviparity and viviparity. In oviparity, fertilized eggs are laid outside the female's body where it develops. Eggs which are laid outside the female's body into the external environment have shells which serves as a protection to the developing embryo and to increase the chances for survival. In ovoviparity, the fertilized egg develops inside the female's body but derives nourishment from the egg yolk. In viviparity, fertilized eggs develop inside the female's body but the embryo receives nourishment from the mother through the placenta.