Question

the path a planet travels around the sun is called its orbit ellipse barycenter precession

Explanation:

An orbit is the path a planet follows around the sun. An ellipse is the shape of the orbit (but not the name for the path itself). The barycenter is the center - of - mass of a system of bodies. Precession is the change in the orientation of the rotational axis of a rotating body.

Answer:

A. orbit