It is a beautiful day with just a few clouds in the deep blue sky. The fact that the clouds look closer to you than the sky is an example of:
A) the Ponzo illusion.
B) brightness constancy.
C) illusory contours.
D) figure and ground.

Question

Quizplus · Accepted Answer

The perception of clouds appearing closer than the sky is an example of figure and ground, where the clouds are perceived as the figure (object of focus) and the sky as the background.

It Is a Beautiful Day with Just a Few Clouds