What is the mass of an atom that has 10 protons, 13 neutrons, and 10 electrons? 10 20 23 33?

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.

We can't until we know what we are working with or on

The answer you are looking for is option d

English , i don't understand spanish.