Which choice most accurately describes how the structure of metals makes them good conductors? metals have a large number of tightly-bound electrons that allow for the movement of electrons through them. metals have a large number of free outer electrons that allow for the movement of electrons through them. metals have a large number of free protons that allow for the movement of protons through them. metals have a large amount of tightly-bound protons that allow for the movement of protons through them.