Concept:Brine is a highly concentrated solution of common salt (sodium chloride) in water.Explanation:Brine is formed when salt dissolves in water to give a concentrated or saturated salt solution.It occurs naturally in salt lakes and oceans due to evaporation of water.It is used in food preservation, pickling, and industrial processes.Brine is not bleaching powder (calcium hypochlorite) nor an aqueous solution of chlorine or sodium sulfate.Answer:C. saturated solution of NaCl