Salt dissolves more quickly in water when the water molecules are moving very quickly. in which of these water samples would salt dissolve most slowly? water at 15°c water at 50°c water at 75°c water at 98°c

Option A. water at 15°C

Explanation:

The question's context clearly states that salt dissolves more quickly in water when the its molecules are moving very quickly; it means very hot water. So the answer would be the opposite, because they are asking for the temp in which the salt would dissolve most slowly. So the answer in this case will be the lowest one, which is 15°C

b. a lightning bug, plug of grass, and a worm