An animal keeper is studying x-rays of two animals, as shown. x-rays show the internal structures of an animal.

which statement is best supported by the x-rays?

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass