The IS auditor's best course of action when preparing the final report is to include the position supported by senior management in the final engagement report. The IS auditor should communicate the audit findings and recommendations to senior management and obtain their feedback and approval before issuing the final report. If there is a disagreement between the auditee and the IS auditor regarding a recommendation for corrective action, the IS auditor should present both sides of the argument and the supporting evidence, and seek senior management's opinion and decision. The IS auditor should respect and follow senior management' s position, and include it in the final engagement report, along with the auditee's comments if applicable. The other options arenot the best course of action, because they either do not resolve the disagreement, do notreflect senior management's authority, or do not report the audit results accurately and completely. References: CISA Review Manual (Digital Version)1, Chapter 2, Section 2.2.5