Which of these statements best identifies the particle that is labeled with an X?a) It is either an electron or an isotope. b) It is either a proton or a neutron. c) It is either a beta particle or a nucleus. d) It is either a neutron or an electron.

b) It is either a proton or a neutron

Explanation:

the particle that is labeled with an X is a neutral atom or a proton which is symbolically represented as :

where: z = atomic number of the element and it comprises of the number of protons(in the nucleus) and number of electron (in the particle)

A = atomic mass of the element  which is represented as the sum of the protons and neutrons (in the nucleus)

Option B is correct.

It is either a proton or a neutron.

Explanation:

The image of the correct question is missing.

I would have attached it, but it might violate the community guidelines.

The image contains a particle labelled as X that contains quarks.

Although, the sub atomic particles of an atom are well known and documented, there are further elementary particles that make up the sub atomic particles. They are more properly referred to as fundamental constituents of matter. They include quarks, leptons etc.

Quarks are fundamental constituents that make up protons and neutrons (The subatomic particles in the nucleus).

There are about six known different types of quarks. And they make up protons and neutrons in combinations.

Hence, it is easy to see why the particle X, that contains quarks, can only be a proton or a neutron.

Hope this Helps!!!