Muller-Lyer, Ponzo, and Zollner are all _________.

A) proponents of the unconscious inference theory
B) geometrical illusions
C) researchers in the field of audiology
D) towns in Italy where illusions were first studied

Muller-Lyer

An optical illusion involving two lines of equal length, each with opposite shaped ends, causing one to appear longer than the other.

Ponzo Illusion

A visual illusion where two horizontal lines of identical length appear to be of different lengths due to their contextual positioning within converging parallel lines.

Geometrical Illusions

Optical illusions that involve the misperception of the basic geometric characteristics such as size, shape, position, or curvature of visually perceived objects.