Which of the following forces is involved in dinitrogen?

The dinitrogen molecule ($N_2$) consists of two identical nitrogen atoms with symmetrical electron distribution, making it nonpolar.

Dipole-dipole interaction requires permanent molecular dipoles. Dipole-induced dipole interaction involves a polar molecule inducing a dipole in a nonpolar molecule. Hydrogen bonding requires hydrogen attached to N, O, or F atoms. London dispersion forces arise from instantaneous electron fluctuations and operate in all molecular systems.

For nonpolar $N_2$, London dispersion forces constitute the only intermolecular interaction present.

The correct choice is $\boxed{C}$.