Match List I with List II and select the correct answer using the codes given below the Lists: List I (Characteristic) List II (Particle) I. Zero mass A) Positron II. Fractional charge B) Neutrino III. Fractional spin C) Quark IV. Integral spin D) Phonon

The correct answer is A because of the following characteristics of the subatomic particles:

I. Zero mass matches with Neutrinos. Neutrinos are elementary particles with extremely small, nearly zero mass and no electric charge.

II. Fractional charge matches with Quarks. Quarks are the building blocks of protons and neutrons and are unique because they carry fractional electric charges, such as plus two-thirds or minus one-third.

III. Fractional spin matches with Positrons. A positron is the antiparticle of the electron. Like electrons, positrons are fermions and possess a half-integer or fractional spin of one-half.

IV. Integral spin matches with Phonons. Phonons represent collective excitations in a rigid crystal lattice. They behave like bosons and possess integral spin values.

Therefore, the correct mapping is I-B, II-C, III-A, and IV-D.