Potatoes are the only native of this three. And most traditional recipes make use of them. One of the oldest dishes is Papas con chuchoca (potatoes and cornmeal).
Rice and pasta were introduced to Chile a couple of hundred years ago, and some traditional recipes make use of them, commonly inspired by European dishes but with Chilean touches.
Quinoa occupies a different place, it has been consumed for centuries in the north of the country, but its popularity in the central regions has been more recent in the last 30 years.