Which of the following evaluation criteria would be the most useful to help the chief...

When selecting an external service provider, the CAE must ensure that the provider possesses the necessary knowledge, skills, and competencies relevant to the specific type of work being reviewed. This is best demonstrated by the provider's experience in the relevant field (Option D). The other options, such as financial interest (Option A), prior relationships (Option B), and compensation (Option C), are considerations for assessing potential conflicts of interest or independence but are not primary criteria for evaluating technical competency.References:

IIA Standard 1210: Proficiency.

IIA Practice Guide on External Service Provider Arrangements.