At room temperature, which of the following is the most compressible?

A. One liter of oxygen, a gas
B. One liter of water, a liquid
C. One liter of mercury, a liquid
D. One liter of iron, a solid

How do we find the answer?

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.