1. Optical illusions tend to be
A. influenced by our experiences
B. more pronounced in children
C. less pronounced in adults
D. genetically determined
2. The fact that the corner of a building thrust toward the viewer looks shorter than an inside corner thrust away from the view can be accounted for by the
A. horizontal-vertical illusion
B. Ponzo illusion
C. Muller-Lyer illusion
D. illusion of relative size