Jaspar Received a ViewMaster for His Birthday

Multiple Choice

Jaspar received a ViewMaster for his birthday.When he looks through the lenses,the image inside the ViewMaster appears to be three-dimensional.This is because each of Jaspar's eyes is seeing a slightly different image of the picture.This is called

A) binocular disparity.
B) the law of closure.
C) stroboscopic movement.
D) the law of proximity.