What is the relationship between the kinetic energy of molecules in an object nd the objects temperature?
a. the total kinetic energy of the molecules is not affected by a change in temperature.
b. as the kinetic energy of the modules decreases the temperature increases
c. as the temperature increases the kinetic energy of the molecules increases
d. the kinetic energy always increases whether the temperature increases or decreases

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.