The mode of communication is represented by which part of the transactional model of communication

Teachers and scholars in the area of communication represent the human communication process using their own illustrations and descriptions of the transactional model of communication. Introduced by Barnlund in 1970, the transactional model is the most recent of the three influential communication models over the the past 60 years. The model and description simplify the process in 2 ways: first, both illustration and description present a snapshot or static representation of what is actually a highly dynamic and flexible process with no obvious start or end point. Second, although the model represents represents an exchange between two people, it can be extended to include a greater number of participants during the process. Slight variations in the model can describe small group communication as well as public speaking.