James proton prepares a saturated solution of sodium chloride in a beaker by adding solid sodium chloride and stirring. when james finishes, crystals of sodium chloride are observed at the bottom of the beaker. which statement is true regarding the solution? a) the concentration of sodium ions is constantly changing. b) the concentration of chloride ions is constantly changing. c) solid sodium chloride never dissolves to form sodium ions and chloride ions. d) sodium ions and chloride ions collide and combine to form solid sodium chloride.