Answer is: B. Electron—negative charge.
The electron (symbol: e⁻) is a subatomic particle whose electric charge is negative one elementary charge.
The proton (symbol: p⁺) is subatomic particle with a positive electric charge of +1e elementary charge.
The neutron (symbol: n°) is a subatomic particle with no net electric charge.
Protons and neutrons, each with masses of approximately one atomic mass unit, are called nucleons.
Protons and neutrons are hadrons composed of three valence quarks
