The normal plasma osmolality (mOsmol/kg) is: (A) 240-255, (B) 260-275, (C) 285-295, (D) 300-312
Answer is C. Normal human reference range of osmolality in plasma is about 285-295 milli-osmoles per kilogram.Ref: Ganong&;s review of medical physiology; 24th edition; page no; 310