Answer:
Option (1).
Explanation:
Circular orbit may be defined as the orbit that has fixed distance around the barycenter. This orbit is present in the shape of circle.
The circular orbit has eccentricity equals to zero. Circular orbit is the special kind of elliptical orbit as the orbit has eccentricity equals to zero. The eccentricity of the elliptical orbit is less than 1.
Thus, the correct answer is option (1).
