What force is associated with charged particles and comprises electric and magnetic forces?

The electromagnetic force is the correct choice because it is a fundamental force in nature associated with charged particles. This force plays a crucial role in the interactions between charged entities, such as electrons and protons. The electromagnetic force is divided into two components: electric forces, which act between static or moving charges, and magnetic forces, which arise when charges are in motion.

This dual nature means that electromagnetic forces are responsible for many phenomena, including the behavior of atoms, the generation of light, and the functioning of electrical devices. Additionally, electromagnetic interactions are integral to the understanding of both classical electrodynamics and quantum mechanics.

Other forces listed, such as the nuclear force, are specific to interactions within atomic nuclei, while frictional force pertains to the interaction of surfaces in contact, and centripetal force is concerned with the motion of objects in circular trajectories. These forces do not encompass the broader interactions of charged particles as accurately as the electromagnetic force does. Thus, the choice of the electromagnetic force aligns perfectly with the description provided in the question.