electrons, neutrons, and protons electrons, protons, and gamma rays neutrons, photons, and beta particles neutrons, protons, and alpha particles
I gave my students this multiple choice question: What are the parts that make up an atom?

Only one answer is correct among these 4 choices:
- electrons, neutrons, and protons
- electrons, protons, and gamma rays
- neutrons, photons, and beta particles
- neutrons, protons, and alpha particles

Could you tell me which one is correct?

electrons, neutrons, and protons