name the U shaped bone present at the base of the skull.

Answer

To answer the question "name the U shaped bone present at the base of the skull," follow these steps:

### Step-by-Step Solution:

1. **Identify the Location**: The question specifies that we are looking for a bone located at the base of the skull.

2. **Shape of the Bone**: The bone in question is described as U-shaped. This is a key characteristic that helps narrow down the options.

3. **Recall the Name of the Bone**: The U-shaped bone at the base of the skull is known as the hyoid bone.

4. **Function of the Hyoid Bone**: Although the question only asks for the name, it's useful to know that the hyoid bone serves as an attachment point for muscles of the tongue and the floor of the oral cavity, and it does not articulate with any other bones.

5. **Final Answer**: Therefore, the answer to the question is the **Hyoid Bone**.