Circle the odd one out.
Trachea, Anvil, Hammer

Explanation

To solve the question of identifying the odd one out among Trachea, Anvil, and Hammer, we can follow these steps:

### Step 1: Identify the function of each term
- **Trachea**: The trachea, also known as the windpipe, is a part of the respiratory system. It carries air to and from the lungs.
- **Anvil**: The anvil is one of the three tiny bones in the middle ear (ossicles) that help in the process of hearing.
- **Hammer**: The hammer, also known as the malleus, is another one of the ossicles in the middle ear that works alongside the anvil to transmit sound vibrations.

### Step 2: Group the terms based on their functions
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