The chief audit executive would likely base the decision on further follow-up of assurance engagement results on which of the following?

The chief audit executive would likely base the decision on further follow-up of assurance engagement results primarily on management's assertions regarding the corrective actions taken. Management's assertions provide critical insights into whether identified issues have been effectively addressed and resolved since they are the primary party responsible for implementing corrective measures.

When management reports that corrective actions have been taken, it creates a foundation for the chief audit executive to assess the effectiveness of those actions. This focus on management's assertions aligns with the internal audit's responsibility to evaluate not just compliance but also the efficiency and effectiveness of risk management processes within the organization.

While the overall audit timeline, the prioritization of engagements, and feedback from the audit committee are also important factors in the audit process, they do not provide as direct an indication of the follow-up needed on specific assurance engagement results. The timeline may dictate the available resources for follow-up, prioritization may guide overall audit strategy, and feedback can inform broader audit activities, but management’s assertions offer the specific insight required to evaluate if issues have been adequately rectified, which directly influences the follow-up process.