Final answer:
A flow of authority is created when a news assistant reports to a senior reporter, who then reports to the editor, and finally to the publisher, following a clear chain of command.
Step-by-step explanation:
When a news assistant reports to a senior reporter, who reports to the editor, who reports to the publisher, a flow of authority has been established. This hierarchical structure is akin to the chain of command found in various organizations, where each individual or office is in charge of another, and in turn must answer to their own superiors. The chain of command ensures that there is a clear line of reporting and accountability, which is essential for the efficient operation of the organization, including in the context of media institutions where journalists, editors, and publishers play distinct roles in the creation and dissemination of news content.