Which one of the following is a viviparous snake?

Options

A. Bungarus
B. Naja naja
C. Natrix
D. Vipera.

Answer

To determine which snake is viviparous from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification of Snakes**:
- Snakes belong to the kingdom Animalia and the class Reptilia.
- Reptiles are primarily characterized by their creeping or crawling locomotion.

2. **Reproductive Methods in Reptiles**:
- Most reptiles, including snakes, reproduce by laying eggs, a condition known as oviparous.
- Oviparous is the most common reproductive strategy among reptiles.

3. **Identify the Suborder of Snakes**:
- Snakes fall under the suborder Serpentis, where the oviparous condition is prevalent.

4. **Viviparous vs. Ovoviviparous**:
- Viviparous refers to animals that give birth to live young.
- Ovoviviparous is a condition where eggs develop inside the mother’s body, and the young are born live, which can sometimes be confused with true viviparity.

5. **Identify Viviparous or Ovoviviparous Snakes**:
- While most snakes are oviparous, some exhibit ovoviviparous reproduction.
- An example of a snake that is ovoviviparous is the Vipera, which is often considered equivalent to viviparous in terms of the birth of live young.

6. **Conclusion**:
- Based on the above information, the correct answer to the question of which snake is viviparous is **Vipera**.

### Final Answer:
The viviparous snake is **Vipera**.

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