This force involves the attraction between charged particles.

A. strong nuclear

B. Gravitational

C. weak nuclear

D. elctromagnetic

The known charged particles are the protons, neutrons and electrons. Protons with positive charge and electrons with negative charge. Neutrons have no charge. The best answer is A. Strong nuclear. Nuclear attraction is the force of the nucleus to attract electrons toward itself. Strong nuclear attraction is between protons and neutrons which are strongly attracted to each other in the nucleus.