Which of the following animals have hollow bones?

Options

A. Fish
B. Snakes
C. Birds
D. Human beings

Explanation

To answer the question "Which of the following animals have hollow bones?" we will analyze each option provided: fish, snakes, birds, and humans.

### Step-by-Step Solution:

1. **Identify the Options**: The animals listed are fish, snakes, birds, and humans.

2. **Examine Fish**:
- Fish can be categorized into two types: cartilage fish (like sharks) and bony fish.
- While bony fish have bones, they do not have hollow bones.
- **Conclusion**: Fish do not have hollow bones.

3. **Examine Snakes**:
- Snakes have a skeleton made up of many bones, but these bones are not hollow.
- They have a large number of bones, but they are solid.
- **Conclusion**: Snakes do not have hollow bones.

4. **Examine Birds**:
- Birds are known for having hollow bones.
- These hollow bones contain air spaces, which help reduce their weight and assist in flight by facilitating oxygen intake.
- **Conclusion**: Birds have hollow bones.

5. **Examine Humans**:
- Humans have solid bones and do not possess hollow bones.
- **Conclusion**: Humans do not have hollow bones.

### Final Answer:
Among the options provided, **birds** are the only animals that have hollow bones.

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