  Consider a class of probability distributions which is dense in the space of
all probability distributions on $\mathbb{R}^{d}$ with respect to weak
convergence, for every $d\in\mathbb{N}$. Then, we construct various explicit
classes of continuous (c\'{a}dl\'{a}g) processes which are dense in the space
of all continuous (c\'{a}dl\'{a}g) processes with respect to convergence in
distribution. This is motivated by the recent result that quasi-infinitely
divisible (QID) distributions are dense when $d=1$. If this result is extended
to any $d\in\mathbb{N}$, then our result will imply that QID processes are
dense in both spaces of continuous and c\'{a}dl\'{a}g processes.
