Question

plane
use the information below to answer the question.
a plane has an xy coordinate with a minimum z coordinate. this essentially means it has width and length, but minimal height. it is not perfectly flat because it is comprised of three dimensions.
common uses
planes can help stabilize a structure or objects with lateral force. lateral force acts like cross - bracing. structurally, planes are very useful. you will commonly see the use of planes in:

• walls in a building
• packaging
• corrugated cardboard
• lateral force

as an example, the room around you has six planes, as does the shape of your tv.
another example is corrugated cardboard, where there are two planes with a woven web in between. increasing the depth or thickness makes it stronger as well.
why are planes not perfectly flat?
they are comprised of three dimensions
they contain borders and edges
they have length
they have width

Explanation:

The text on the left states that a plane (in the context here) is not perfectly flat because it is composed of three dimensions. Among the options, the first option "They are comprised of three dimensions" matches this explanation. The other options (containing borders/edges, having length, having width) do not address the reason for not being perfectly flat as per the given text.

Answer:

A. They are comprised of three dimensions