Which of the following assessments will assist in evaluating whether the internal audit function is...

The QAIP (Quality Assurance and Improvement Program) requires both ongoing monitoring and periodic assessments. Among these, ongoing monitoring is the mechanism that ensures continuous evaluation of whether engagements are being performed with quality and in conformance with the Standards.

Option A (periodic assessments) review effectiveness but are not continuous. Option C (external assessments) and Option D (SAIV) are broader and periodic, not engagement-level consistency checks.