Select the odd one out .

Options

A. Anvil
B. hammer
C. Stapes
D. Trachea

Answer

To solve the question of selecting the odd one out among the options: anvil, hammer, staves, and trachea, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Categories**:
- First, we need to categorize the items given in the question.
- Anvil, hammer, and staves are all related to the ear, specifically the middle ear.

2. **Understand the Function of Each Item**:
- **Anvil (Incus)**: One of the three small bones in the middle ear that helps transmit sound vibrations.
- **Hammer (Malleus)**: Another small bone in the middle ear that also plays a role in sound transmission.
- **Staves (Stapes)**: The third small bone in the middle ear involved in conducting sound to the inner ear.
- **Trachea**: This is a windpipe that carries air to the lungs and is part of the respiratory system.

3. **Compare and Contrast**:
- The first three items (anvil, hammer, staves) are all bones in the middle ear that are involved in the process of hearing.
- The trachea, on the other hand, is not related to hearing but is instead part of the respiratory system.

4. **Conclusion**:
- Since anvil, hammer, and staves are all related to the auditory system, while trachea is related to the respiratory system, the odd one out is **trachea**.

### Final Answer:
The odd one out is **trachea**.

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