Question

what part of the atom is the arrow pointing to? proton electron neutron

Explanation:

In an atom, electrons are negatively charged particles (marked with -) that orbit the nucleus. The arrow in the diagram points to a particle with a negative charge, which matches the electron's properties. Protons are positive (+) and in the nucleus, neutrons are neutral and in the nucleus. So the arrow points to an electron.

Answer:

B. Electron