Which of the following mammals lays egg?

Options

A. Bat
B. Scaly anteater
C. Spiny anteater
D. Whale

Answer

To determine which of the following mammals lays eggs, we need to analyze the options given: bat, scaly anteater, spiny anteater, and whale.

### Step-by-Step Solution:

1. **Understanding Mammal Reproduction**:
- Mammals can be classified into two categories based on their reproductive methods: oviparous (lay eggs) and viviparous (give birth to live young).

2. **Identifying the Options**:
- The options provided are:
- A) Bat
- B) Scaly anteater
- C) Spiny anteater
- D) Whale

3. **Analyzing Each Option**:
- **Bat**: Bats are viviparous mammals that give birth to live young.
- **Scaly anteater**: Also known as pangolins, these are viviparous mammals.
- **Spiny anteater**: This is also known as the echidna, which is an oviparous mammal that lays eggs.
- **Whale**: Whales are viviparous mammals that give birth to live young.

4. **Conclusion**:
- Among the options, the spiny anteater (C) is the only mammal that lays eggs. Therefore, the correct answer is **C) Spiny anteater**.