"A scientist has four samples of salt water with different salinities (parts per thousand - ppt) made by dissolving 0.2 grams of salt in water. Which sample has the greatest volume of water? A) Sample 1 (4.2 ppt) B) Sample 2 (6.7 ppt) C) Sample 3 (3.5 ppt) D) Sample 4 (2.9 ppt)"