In Oracle Payroll Cloud, if no specific owner is indicated in the payroll flow definition, the user who submits the payroll flow becomes the default owner of the tasks within that flow (Option C). This ensures accountability and visibility for the submitter, who can then monitor and manage the flow's progress. Options A, B, and D (based on roles) are incorrect because ownership defaults to the individual submitter, not a role-based group, unless explicitly overridden in the flow definition (e.g., by assigning a group or role). Oracle documentation specifies this default behavior for flow ownership.