Final answer:
A line might best be described as a point moving through space. It is the simplest visual element and can be used to create forms.
Step-by-step explanation:
A line might best be described as a point moving through space. It is the simplest visual element, but also in many ways the most important. When an artist marks a simple point on a surface, (also referred to as the ground), they immediately create a figure-ground relationship.
That is, they divide the work between its surface and anything that "sits" upon it. Our eyes differentiate between the two, and their arrangement has everything to do with how we see a final composition. The line itself can be used as a way to create forms.