To create supersaturated solutions, the water would need to be heated to a higher temperature, which would give molecules and ions more kinetic energy, increasing solubility. When the solution is then cooled, it can hold more solute than it would at room temperature, resulting in a supersaturated solution. So the correct response is:
The water would need to be heated to a higher temperature, which would give molecules and ions more kinetic energy, increasing solubility.