A supersaturated solution can be prepared by dissolving solute in solvent while adding . A supersaturated solution contains more than can ordinarily be dissolved in the solvent at room temperature. A solution may remain supersaturated until is initiated, often by adding solid to the solution or by allowing solvent to evaporate. a-1. heat
b-1. more solvent
c-1. detergent
a-2 precipitation
b-2. filtration
c-2 distillation

A supersaturated solution is a solution which contains more solute than it can dissolve at that particular temperature.

Explanation:

A supersaturated solution can be prepared by dissolving solute in solvent while adding heat. A supersaturated solution contains more solute than can ordinarily be dissolved in the solvent at room temperature. A solution may remain supersaturated until crystallization is initiated, often by adding solid to the solution which is known as seeding or by allowing solvent to evaporate.

Factors that affect solubility include; temperature and nature of the solute.

For solids, an increase in temperature increases the solubility of the solute in the solvent.

A supersaturated solution is unstable and when a conditions are not stable for example, the addition of a seed crystal, a small particle of solute or decrease in temperature either by cooling or allowing solvent to evaporate will cause the excess solute to crystallize out of solution.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the answer is d. 74.02