Which of the following is not a viviparous animal ?

Options

A. rat
B. lizard
C. rabbit
D. cat

Answer

To determine which of the following animals is not viviparous, we need to understand the definitions of viviparous and oviparous animals.

1. **Definition of Viviparous Animals**: Viviparous animals are those that give birth to live young ones. This means that the young develop inside the mother's body and are born alive.

2. **Definition of Oviparous Animals**: Oviparous animals, on the other hand, lay eggs. The young develop outside the mother's body, hatching from the eggs.

3. **Analyzing the Options**: The options given are:
- A) Rabbit
- B) Lizard
- C) Cat

4. **Identifying Viviparous Animals**:
- **Rabbit**: Rabbits are viviparous as they give birth to live young.
- **Cat**: Cats are also viviparous and give birth to live young.
- **Lizard**: Lizards are generally oviparous, meaning they lay eggs.

5. **Conclusion**: Since the question asks for the animal that is not viviparous, the answer is **B) Lizard**.

### Final Answer:
The animal that is not viviparous is **B) Lizard**.