Who are the primary psychologists associated with the development of Gestalt Theory?

The correct option is b).

• Gestalt Theory was primarily developed by Max Wertheimer, Wolfgang Köhler, and Kurt Koffka.

The other options are associated with different schools of thought:

• a) Watson, Skinner, and Pavlov are associated with Behaviorism.
• c) Piaget, Vygotsky, and Bruner are associated with Cognitive Development and Constructivism.
• d) Maslow, Rogers, and Frankl are associated with Humanistic Psychology.

The primary psychologists associated with the development of Gestalt Theory are Wertheimer, Kohler, and Koffka.

The final answer is $\boxed{\text{b) Wertheimer, Kohler, and Koffka}}$.