Concept:Gestalt psychology studies perception and learning as organized wholes. Its main founders are Max Wertheimer, Wolfgang Köhler, and Kurt Koffka.
Explanation:"Gestalt" means a unified whole. These psychologists believed we perceive things as complete patterns, not isolated parts.
Max Wertheimer is often called the father of Gestalt psychology.
Wolfgang Köhler and Kurt Koffka were his key collaborators and also leading figures.
All three made essential contributions to the theory of learning and perception.
The question asks for the "most prominent member." While Wertheimer is the founder, all three are equally recognized as prominent leaders of this school.
Therefore, the correct option includes all of them.
Answer:D. All of these