How can a saturated solution of a solid be made unsaturated?
by increasing the temperature of the solvent
by decreasing the temperature of the solvent
by stirring the solution
by adding more solute
a saturated solution cannot be made unsaturated

Answer is: by increasing the temperature of the solvent.

Saturated solution contains the maximum concentration of a solute dissolved in the solvent (usually water) and if extra solute is add to saturated solution, that solute will not dissolve.

The amount of solute that can be dissolved in a solvent depends of chemical composition, temperature and pressure.

In this example, because chemical compostion and pressure are the same, the amount of solute that can be dissolved in a solvent depends on temperature.

The higher the temperature of the solvent, the more solute will be dissolved.

fe 55.85 g/mol and h2o 18.02 g/mol.