You were out walking with your three-year-old nephew when you see a plane fly overhead. You point up to the sky and say, "Look at the plane." Your nephew seems confused and asks, "Where?" You point to the sky again. Your nephew says, "That's not a plane—my finger is bigger." Your nephew has not yet acquired:
A. the Gestalt laws
B. size constancy
C. linear perspective
D. convergence
E. binocular disparity