B. Any particle with mass
Gravitational force is a fundamental force of nature that acts between any two objects with mass. It is a universal force that affects all particles with mass, regardless of their charge or composition. This means that any particle, whether it is a fundamental particle like an electron or a proton, or a composite particle like an atom or a molecule, will experience the gravitational force. The magnitude of the gravitational force depends on the masses of the objects and the distance between them, as described by Newton's law of universal gravitation.