Amaterial that allows an electric current to flow through it is an electrical conductor. a material through which an electric current cannot flow easily is called an insulator. which statement best describes the difference between an insulator and a conductor?

an insulator has a static charge, and a conductor does not.
a conductor contains more electrons than an insulator.
a conductor is a metal, and an insulator is any material that is not a metal.
an insulator does not have electrons that are free to move, and a conductor does.