Final answer:
The depth cue that prompts depth by making faraway objects appear hazy is known as aerial or atmospheric perspective (option C). It is a monocular cue used to enhance the perception of depth in both visual perception and art.
Step-by-step explanation:
The depth cue that makes faraway objects appear to be hazy, thereby enhancing the perception of depth, is the aerial perspective. This is a type of monocular cue that can be observed when distant objects seem less sharp and often blueish compared to nearer objects, due to atmospheric scattering of light. It is similar to what painters use in the technique of atmospheric perspective to create depth in their paintings by rendering more distant objects with less contrast and a bluer tone.
Texture gradient refers to the way we perceive the texture of objects to become finer and less discernible as the object moves farther away. Motion parallax occurs when objects that are closer to us move faster across our field of vision than objects that are further away when we move our heads or travel. Interposition is when one object that overlaps another is perceived as closer.