Answer:
The correct answer is: Similarity.
Step-by-step explanation:
The gestalt principle of similarity can be understood as the ability that individuals have to create relationships between objects and elements of a determined context.
For instance, in a football match the ability that let individuals acknowledge which players are from the same team is the principle of similarity; the players may share similar playing style, similar uniforms, values, etc.
So without really knowing a particular player's position on the field, thanks to the Gestalt's principle of similarity Ryan is easily able to recognize the players as members of their respective teams.