Pneumatic bones occur in
(a) Whale
(b) Dolphin
(c) Peacock/Pigeon
(d) Snake

Options

A. Whale
B. Dolphin
C. Peakcock/Pigeon
D. Snake

Explanation

To solve the question about which organism has pneumatic bones, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Pneumatic Bones**:
- Pneumatic bones are characterized by being hollow and containing air. This structure helps reduce the overall weight of the bones, which is advantageous for flight.

2. **Identify the Organisms Listed**:
- The options given are:
- (a) Whale
- (b) Dolphin
- (c) Peacock/Pigeon
- (d) Snake

3. **Analyze Each Option**:
- **Whale**: Whales are mammals and do not possess pneumatic bones. They have solid bones to support their large body in water.
- **Dolphin**: Dolphins are also mammals and share similar characteristics with whales; they do not have pneumatic bones.
- **Peacock/Pigeon**: Both peacocks and pigeons are birds (Aves) and are known to have pneumatic bones. This adaptation aids in flight by reducing body weight.
- **Snake**: Snakes are reptiles and have solid bones; they do not have pneumatic bones.

4. **Conclusion**:
- The only organisms from the options provided that possess pneumatic bones are the peacock and pigeon (Option c).

### Final Answer:
(c) Peacock/Pigeon

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