Which one of the following is oviparous?

Options

A. Platypus
B. Flying fox (Bat)
C. Elephant
D. Whale

Answer

To determine which of the given options is oviparous, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Oviparous**:
- Oviparous refers to organisms that lay eggs. This means that the young develop outside the mother's body in eggs.

2. **Identify the Options**:
- The options provided are: Platypus, Bat, Elephant, and Whale.

3. **Classify the Animals**:
- All the options belong to the class of mammals. However, most mammals are viviparous, meaning they give birth to live young.

4. **Identify Oviparous Mammals**:
- While most mammals are viviparous, there are exceptions. The platypus (Ornithorhynchus) and the spiny anteater are examples of oviparous mammals that lay eggs.

5. **Evaluate Each Option**:
- **Platypus**: Oviparous (lays eggs).
- **Bat**: Viviparous (gives birth to live young).
- **Elephant**: Viviparous (gives birth to live young).
- **Whale**: Viviparous (gives birth to live young).

6. **Conclusion**:
- Among the options, the only oviparous animal is the **Platypus**. Therefore, the correct answer is **Option A: Platypus**.