The Law of Closure, a Gestalt principle of visual perception, dictates that the human brain will complete incomplete images by filling in missing information to perceive a unified whole.
This principle aids in the recognition of familiar shapes despite their partial obscuration.
Explanation of Other Options:
(B) Common region: Elements sharing a defined boundary are grouped together.
(C) Proximity: Elements situated near one another are perceived as a group.
(D) Simplicity: There is a tendency to interpret complex visuals in their most straightforward form.
Consequently, option (A) accurately represents the concept of completing gaps to achieve a perception of a full image.