Which particle is known for having no mass and is associated with the fundamental forces?

The particle known for having no mass and associated with the fundamental forces is indeed the boson. Bosons are a category of particles that include force carriers, which mediate the fundamental forces of nature. For instance, the photon is a boson that mediates electromagnetic force and has no mass. Other examples of massless bosons are gluons, which mediate the strong force, and the hypothetical graviton, proposed to mediate gravity.

In contrast, fermions (such as electrons, protons, and neutrons) have mass and are constituents of matter. Leptons, which include electrons and neutrinos, also possess mass (with neutrinos having a very small mass). Quarks, which combine to form protons and neutrons, have mass as well. Therefore, the characteristics of massless bosons position them as essential players in the framework of fundamental forces, making them the correct choice in this context.