Answer: The answer is co workers at the same level.
Step-by-step explanation:
Horizontal communication is a system of communication which operates through internal communication channels such as the internal telephone, memoranda or face -to face communication. It takes place between staff of about the same level in different department in an organization. For example horizontal communication can take place between the factory manager and cost accountant in an organization. In horizontal communication there is no authority flowing along the lines of horizontal communication