Final answer:
Jason is engaging in the organizing function of management by setting up a reporting hierarchy in his new department.. thus, the option C is the correct answer.
Step-by-step explanation:
In the scenario provided, Jason is arranging his new department by deciding that only the top managers will report to him, while everyone else will report to the head of human resources. This act of determining the hierarchy and the flow of information within the organization is a part of the management function known as Organizing. Organizing involves creating the internal structure of the organization and encompasses the tasks related to the arrangement of resources, including the delegation of responsibilities and the establishment of relationships between members of the organization to achieve objectives effectively.