Correct option is C
Zero mass (A) corresponds to the neutrino (2), a subatomic particle with no rest mass and no electric charge.
Fractional charge (B) is a characteristic of quarks (3), which carry fractional electric charges (either +2/3 or -1/3).
Fractional spin (C) corresponds to the photon (4), which is a boson with a spin quantum number of 1, an integral value.
Integral spin (D) is a characteristic of positrons (1), which are fermions with a half-integer spin.
These particles are fundamental to the standard model of particle physics, which explains the properties and interactions of elementary particles, including neutrinos (known for weak interactions) and quarks (constituents of protons and neutrons).
