Question

the basic structure of an atom can best be described as

protons and neutrons orbiting a nucleus of electrons
electrons orbiting a nucleus of protons and neutrons
electrons and protons orbiting a nucleus of neutrons
neutrons orbiting a nucleus of protons and electrons

Explanation:

In an atom, the nucleus is composed of protons and neutrons. Electrons orbit around this nucleus.

Answer:

electrons orbiting a nucleus of protons and neutrons