Answer:
D. supersaturated
Explanation:
The solution is said to be supersaturated. Generally, the rate of solubility of substances can be increased by grinding, stirring and heating.
For a solution that contains enough solute than it can normally dissolve at a particular temperature, we say it is supersaturated.
The point where the additional solute crystals begins to sink to the bottom of the container points to the fact that the solution is saturated already and would no more dissolve any more solute. When the solution becomes heated, dissolution is induced and more solute begins to dissolve, this makes the solution supersaturated. This solution now contains more solute than it can normally hold.
