Which of the following threatens internal audit objectivity'?

A significant threat to internal audit objectivity arises when the chief audit executive reports directly to the chief financial officer, especially if the CFO previously led the internal audit activity. This reporting relationship can undermine the independence necessary for objective audits, as the CFO might influence the scope or outcome of audit engagements to suit certain financial reporting outcomes or to cover previous decisions made while in charge of internal audit.

The IIA's International Standards for the Professional Practice of Internal Auditing on independence and objectivity.