Answer is A. a hot solution with all of the solute dissolved.
A solution is a homogeneous mixture in which solute is dissolved in solvent. Solution may be unsaturated, saturated and supersaturated. Saturated solution is the solution in which solvent is not able to dissolve more solute at normal temperature. But if you heat the saturated solution up to 80⁰C, the same solution able to dissolve more solutes making the solution supersaturated. Thus, a supersaturated solution is a solution that contains more solute than what the solvent can normally dissolve.
