What is the cross section created when a slice is made perpendicular to the 2 bases of a cylinder?

A. a circle

B. an ellipse

C. a rectangle

D. a triangle

The answer would be C. A cross section is defined is the intersection of a plane in a three-dimensional space. Therefore, cutting a cross section perpendicular to a cylinder would result to a rectangle where the height is equal to the height of the cylinder and its width is same as the diameter of the cylinder base.