Standing on the commuter train platform, you glance down the tracks to see if the train is coming. as you do, you notice that the parallel rails of the train track appear to come together and meet in the distance. this is an example of which depth perception cue?

Linear perspective.

Explanation:

When the parallel rails of the train track appear to come together and meet in the distance is an example of the linear perspective. This is a depth perception cue. The linear perspective is a monocular cue that gives us depth information in which parallel lines appear to meet in the distance. Visual cues help us perceive the distance of an object. The vanishing point is the place where the parallel lines seem to come together.