Which one of these animals is not viviparous?A     FelisB     ElephasC     PsittaculaD     Equus

To determine which of the listed animals is not viviparous, we need to understand the reproductive method of each.

1. Felis (Cats): Cats are viviparous mammals. They give birth to live young after developing them inside the mother's body.

2. Elephas (Elephants): Elephants are also viviparous mammals, with a long gestation period, giving birth to live offspring.

3. Psittacula (Parrots): Parrots are birds, which are oviparous. They lay eggs from which the chicks hatch after incubation.

4. Equus (Horses): Horses are viviparous mammals, like cats and elephants, giving birth to live young.

Conclusion

The animal that is not viviparous is C. Psittacula (Parrots), as they reproduce by laying eggs.