Answer:
The solution used to make crystals of alum, sugar, or copper sulfate is saturated. This means that the solution contains the maximum amount of solute that it can hold at a given temperature.
Answer saturated
Step-by-step explanation:
When a string is hung in a saturated solution, the excess solute begins to precipitate out of the solution and form crystals on the surface of the string. If the solution were unsaturated, there would not be enough solute present to form crystals on the string.