How does an electron relate to energy level?

How does subatomic particles relate to atomic unit?

The reviews ask for 1 to 2 sentences.

I have struggled with this question and I don't know how to answer it.

Electrons are in energy levels. But that doesn't seem to answer the question to me.
If we call subatomic particles the neutron, proton, and electron, then neutrons and protons have approximately the same mass (1 amu) and electrons have a mass of about 1/1800 that amount (essentially 0 amu). Again, I don't know that this anwers the question.

An electron relates to energy levels through its distribution around an atomic nucleus. In an atom, electrons occupy specific energy levels or orbitals, which correspond to different levels of energy. When an electron moves to a higher energy level, it absorbs energy, and when it moves to a lower energy level, it releases energy.

Subatomic particles, such as protons, neutrons, and electrons, are the building blocks of atoms, which are the basic units of matter. They contribute to the atomic unit by forming the structure and properties of an atom. Protons and neutrons reside in the nucleus, while electrons orbit around it, and their interactions determine the overall behavior of the atom.

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