Answer:
Option (A)
Step-by-step explanation:
Generally, an ellipse is defined as a plane curve that borders any two focal points in such a way that for all of its points lies on the curve and the sum of the two distances to their focal points must remain constant.
The shape of most of the planets usually resembles an ellipse, which is basically comprised of two axes, which represents the diameters of the ellipse. Of the two, one is the longest and the other is the smallest, that forms the major and the minor axes respectively. They are always oriented perpendicular to each other.
When both of these axes are equal in terms of length then the ellipse represents a circle.
Thus, the correct answer is option (A).