Which bone forms the forehead and starts at the top of the eyes?

The frontal bone is the correct answer because it is a crucial bone in the structure of the skull that forms the forehead. It begins at the top of the eye sockets (or orbits) and extends downwards to create the prominent area of the forehead. This bone plays a key role in protecting the frontal lobe of the brain and provides structure to the face.

In contrast, the maxilla is the upper jaw bone that holds the upper teeth and forms part of the orbits; it does not contribute to the forehead. The zygomatic bone, also known as the cheekbone, contributes to the prominence of the cheeks and the lateral aspect of the orbits but does not affect the forehead area. The mandible is the lower jaw, which is separate from both the forehead and the eye sockets. Each of these bones has distinct functions and locations in the facial structure, making them important in their own rights, but the frontal bone specifically addresses the formation of the forehead and the area above the eyes.