Grass seen through sunglasses appears as green as it does without sunglasses.This best illustrates

A) blindsight.
B) interposition.
C) accommodation.
D) color constancy.

Color constancy is the ability of our brain to perceive the color of an object as constant despite variations in the light that falls on it. In this case, the sunglasses filter out some wavelengths of light, yet we still perceive the grass as green. This is possible because our brain adjusts the color perception based on the context and background information provided.