Final answer:
Interposition is a monocular depth cue where closer objects obstruct our view of distant objects. It is essential for depth perception, alongside other cues such as linear perspective, relative size, and binocular disparity.
Step-by-step explanation:
In the context of depth perception, interposition is a visual cue that can help us infer which objects are closer or farther away from us. Interposition occurs when one object overlaps another, thereby covering a part of the more distant object and giving us a cue that it is behind the closer object. Therefore, the correct answer to the question is 'A. obstruct our view of distant objects'.
Visual cues for depth perception can be categorized into monocular and binocular cues. Monocular cues, like linear perspective and interposition, require the use of only one eye to provide depth information. For instance, linear perspective refers to the appearance of parallel lines converging in the distance. On the other hand, binocular cues rely on the slightly different views each of our eyes has of a scene, referred to as binocular disparity, which requires both eyes to perceive depth effectively.