People with normal vision will perceive a pyramid whether they see the object from the side, top, or any other angle as long as the object is, in fact, a pyramid. This is an example of ________________

A) shape constancy
B) size constancy
C) figure-ground
D) visual angle

Answer: A
Rationale: Perceptual constancy is the ability to perceive objects as having constant shape, size, and color despite changes in perspective. In this example, shape constancy allows people to recognize a pyramid's shape from any angle.