You Are Riding on a Train

Multiple Choice

You are riding on a train. As you look out the window, the farmhouses near the tracks appear to be moving backwards but the large hill in the distance with a water tower at the top appears stationary. In addition, the sun even appears to be moving in the same direction you are traveling. This phenomenon illustrates

A) linear perspective.
B) retinal disparity.
C) motion parallax.
D) interposition.