Take a moment to analyze this work: (Swan lays across a red hill that protrudes into a purplish-pink sky with gray clouds.)

Painting by Lizza Littlewort, distributed under a CC BY-SA 4.0 license.

Notice how you can almost imagine how it feels. What do you conclude is the element the artist is using to create this effect?

A.
balance

B.
forms

C.
lines

D.
texture