Final answer:
Productivity is not a criterion for integration; rather, it may be an outcome of integration. Integration is defined by coordination, interaction exclusiveness, and proximity, not by productivity itself.
Step-by-step explanation:
The question asks which of the following is not a criterion for integration. The correct answer is Productivity. Integration generally refers to the process by which different entities, such as countries or organizations, combine into a whole. Criteria for successful integration often include coordination, such that entities work together in a harmonious fashion; exclusiveness of interactions, meaning that entities within the integrated system primarily interact with each other rather than outside systems; and proximity in space and time, implying that the entities are close enough to each other to enable interaction. Productivity, while it may be an outcome of integration, is not itself a criterion for the process of integration.