Depth perception

[basophilic]

Which of the following perceptual organizational principles provides information about depth?
Motion parallax
Shape constancy
Relative height
Retinal disparity
Answer is D. Aren't A and C also depth cues?

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[shefv]

The main idea with depth perception is binocular vision.

Motion parallax
Shape constancy
Relative height
and these three concepts are related to monocular cues and visual constancy

Retinal disparity - binocular cue

 

[basophilic]

But aren't monocular cues depth cues just with one eye? Depth can be perceived with one eye, no? And motion parallax and relative height are monocular depth cues.
Wikipedia: "Monocular cues provide depth information when viewing a scene with one eye."