Which of the following best describes the most important criteria when assigning responsibility for specific tasks required in an audit engagement?

When conducting a performance appraisal of an internal auditor who has been a below-average performer, it is not appropriate to:

A company has recently incurred significant cost overruns on one of its construction projects. Management suspects that these overruns were caused by the contractor improperly accounting for costs related to contract change orders. Which of the following procedures would be appropriate for testing this suspicion?
I. Verify that the contractor has not charged change orders with costs that have already been billed to the original contract.
II. Determine if the contractor has billed for original contract work that was canceled as a result of change orders.
III.
Verify that the change orders were properly approved by management.

When establishing a quality assurance and improvement program, the chief audit executive should ensure the program is designed to accomplish which of the following objectives?
1. Add value.
2. Improve operations.
3. Provide assurance that the internal audit activity conforms with the Standards.
4. Provide assurance that the internal audit activity conforms with the IIA Code of Ethics.

An internal auditor provided the following statement about division A's performance during the month: "Because supplies of raw material X were scarce, division A's profits declined by 15 percent." Which of the following can be validly concluded from the auditor's statement?
I . Division A's production level declined by 15 percent.
II . Division A could have sold more products than it produced.
III . Division A usually sells all of the products that it produces.