Answer: Disseminator
Explanation: In simple words, disseminator means the individual whose duty in the organisation is to spread any important news to the affected individuals. In the process of dissemination, the feedback or eply from audience is not expected.
In the given case, Jim is informing employees about change in policies so there is non need for employees to reply as the decision has been made and they are only provided with the information.
Thus, the correct answer is disseminator.