I dissolve sugar in water. Eventually, I notice that no more sugar will dissolve, and crystals are forming in the bottom of my glass. What type of solution is this?

Unsaturated
Saturated
Supersaturated
Not saturated

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Idont really know sorry