Prior to the Renaissance,artists were generally unsuccessful in painting realistic scenes.What did they NOT seem to understand

A)  how to use depth cues 
B)  subjective colour mixing 
C)  how to use binocular depth perception cues 
D)  geometric forms

Depth Cues

Visual information that allows individuals to perceive the distance or three-dimensionality of an object or scene.

Binocular Depth Perception

The ability to perceive the world in three dimensions (3D) and to judge the distance of objects, using visual cues derived from the two eyes working together.

Subjective Colour Mixing

The phenomenon of perceiving new colors when different wavelengths of light are combined in the eye, rather than physically mixed.