Final answer:
The parallel cross-section of an ice cream cone is a circle.
Explanation:
The parallel cross-section of an ice cream cone is best described as a circle. When a cone is cut by a plane perpendicular to its base, the resulting cross-section is a circle, given that the circle is a special case of an ellipse when it comes to conic sections.
Learn more about Conic Sections here:
https://brainly.com/question/40667251
