Many optical illusions can be explained in terms of an observer's

A) ability to move the eyes more easily one direction than another.
B) tendency to answer quickly without carefully examining the objects.
C) over- or under-estimating the distance to some objects.
D) difference in shape between the left and right eyes.

Optical Illusions

Visual phenomena where the perception of images differs from objective reality, often highlighting how the brain processes visual information.

Over-Estimating

In psychology, this refers to the cognitive bias where individuals predict that they are more likely to experience positive outcomes and less likely to endure negative ones compared to statistical evidence or past experiences.