Answer:
Option C. Atmospheric perspective.
Step-by-step explanation:
The Atmospheric perspective, or Aerial perspective, is a method of creating the illusion of depth, or recession, in a painting or drawing by modulating color to simulate changes effected by the atmosphere on the colors of things seen at a distance.
Just as stated in question provided, atmospheric perspective is the technique used by artists to depict the effects of the atmospheric air on the appearance of an object as it is viewed from a distance.