I am going to take a guess based off of my earth science knowledge and say it is false. Sorry if I'm wrong.
The answer is fluid, macromolecules, or other large particles
Isotopes of an element are defined has that has same atomic number but different mass number mean they have different number of neutrons
so the statement that best describe a similarity is
<span> same atomic number; different mass number
</span>so correct option is C
hope it helps
