Which of the following models best describes the bonding within a layer of the graphite structure?

Despite being a metal, the layer of graphite possesses non-metallic bonds because valence electrons are used to bind to other unoccupied valence orbitals. Each carbon atom in this structure is joined to three other carbon atoms.

As a result, there is a layer, and it is unsaturated. Since the difference in electronegativity between the two carbons is zero, a covalent link between them exists. Non-metallic covalent bonds make up the majority of the boning.

The right response is therefore option C.