Given below are two statements :
Statement I : Graphite is a good conductor of electricity.
Statement II : Diamond is highly transparent and the hardest known material.
In the light of the above statements, choose the correct answer from the options given below :

Statement I: "Graphite is a good conductor of electricity."

This is true because graphite has a layered structure with free electrons that can move easily, making it conduct electricity despite being a non-metal.

Statement II: "Diamond is highly transparent and the hardest known material."

This is also true. Diamond has a tetrahedral lattice structure, which gives exceptional hardness. It is also highly transparent owing to strong covalent bonding and the absence of free electrons.

Hence, both statements are true.