Bones of which part of the skull are movable?

Explanation

### Step-by-Step Solution:

1. **Identify the Skull Structure**: The skull is made up of several bones that serve various functions, primarily protection of the brain and support for facial structures.

2. **Determine the Nature of Skull Bones**: Most bones in the skull are immovable. In fact, about 98% of the skull bones are fixed and do not allow for movement.

3. **Identify the Movable Bone**: The only bone in the skull that is movable is the lower jaw, also known as the mandible.

...