Question

what does the horizon line represent in perspective drawing?
a. the boundary between two colors
b. the vertical limit of the drawing
c. the viewers eye level
d. the top edge of the paper

Explanation:

In perspective drawing, the horizon line is a key element. It is not related to color boundaries (a), as that's about color separation. It's not the vertical limit (b) as the drawing can extend vertically above or below. And it's not the top edge of the paper (d) as the paper's edge is a physical limit not an artistic concept. The horizon line represents the viewer's eye level (c) which is a fundamental concept in perspective to create the illusion of depth.

Answer:

C. The viewer's eye level