Which best describes how geothermal energy is used to make electricity?. . A.. Rocks are split to release energy that drives a steam turbine attached to an electrical generator.. . B.. Heat energy from below the ground converts water to steam to drive a steam turbine attached to an electrical generator.. . C.. Heat energy from below the ground drives liquid water though a turbine attached to an electrical generator.. . D.. Heat energy from below ground heats and presuurizes air that drives a turbine attached to an electrical generator..