Argon gas has a boiling point of -197 °C. Which of the following diagrams best represents the distribution of argon atoms in a steel sphere at -190 °C?

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.

As cooking food that has to go in the oven