Final answer:
The solution reached by continually adding sugar to water until no more can dissolve is known as a saturated solution.
Step-by-step explanation:
If you keep adding sugar to water until the point where no more dissolves, the solution is known as saturated. This occurs when the sugar concentration in the solution reaches its natural limit, beyond which no additional sugar can dissolve. At this point, the solute's concentration is equal to its solubility. The solution has then reached its maximum capacity for dissolving the solute, and any additional sugar added will remain undissolved at the bottom of the container, indicating that the saturation point has been reached.