The internal practitioner has certain advantages over the external practitioner. Which one of the following is an advantage of the internal practitioner? not affected by the organization's power structure specialized practitioner skills objective at looking at situations not familiar with the organization's norms knowledgeable of the organization's structure and workings Highly differentiated organizational groups require a) a separate OD practitioner for each unit b) classification by structure, goals, and location c) techniques and practices to achieve integration none of the above answers a and b The differentiation-and-integration model was developed to study and understand the leadership of the organization issues between businesses such as corporate power interdepartmental issues communication problems between individuals none of the above