What defines the point at which a saturated solution is achieved?

A saturated solution is defined by the point where the solvent has dissolved the maximum amount of solute at a given temperature and pressure. At this stage, any additional solute added will not dissolve but instead will remain undissolved, leading to the formation of solid. This is a fundamental concept in solution chemistry and is crucial for understanding equilibrium in a saturated system.

When more solute is added beyond this saturation point, the concentration of the solute in the liquid does not increase because it cannot dissolve anymore, thus resulting in solid particles being present. The other options do not accurately capture this definition; boiling points, liquid volumes, or the visibility of the solute do not inherently indicate saturation based on solubility limits.