Which one moves in energy levels: protons, neutrons, or electrons

Electrons

Explanation:

They are located on the outermost levels which are the orbitals. The orbitals are the energy levels of an atom.

electrons

Explanation:

Electrons revolve around the nucleus in a fixed circular path termed "orbits" or "shells" or "energy level."

The region where an electron is most likely to be is called an orbital. Each orbital can have at most two electrons. Some orbitals, called S orbitals, are shaped like spheres, with the nucleus in the center.