The development of the embryo inside an egg is called
A. Vivipary
B. Carnivorous
C. Omnivorous
D. Ovary

Hint: Carnivorous and omnivorous are food habit related terms. Vivipary means attachment and development of an embryo within its mother and Ovipary means the development of an embryo outside the body.

Complete answer: Vivipary refers to the development of the embryo inside the womb that is present in the body of the mother, and it leads to a living birth. Human child development inside the embryo is an example of this.
Carnivorous are animals that get nutrition by eating other animals. An example includes a tiger, lion, etc.
Omnivorous are those animals that get nutrition by eating both plants and animals. For example, humans.
The ovary is a reproduction method, in which eggs are laid by the mother and embryo development takes place outside the mother's body. Each egg develops into a young animal by hatching. Birds reproduce by this method.

So, the correct answer is option A. Vivipary.

Note: Examples of viviparous are mammals and examples of oviparous are amphibians, reptiles, and birds. One of the most common exceptions of Ovipary mammals is Platypus. This mammal is the connecting link between reptiles and mammals. It lays eggs and scrolls in the soil – this is the characters of reptiles.
The egg develops outside the body, thus, Ovipary. But the offspring of these mammals grow up by breastfeeding by the mothers. Hence, it is considered as mammals.