Which of the following is most appropriate for the chief audit executive to keep in...

Policies and procedures should be tailored to the size and maturity of the internal audit function. A small or less mature function may require simpler procedures, while a large and well-established function may require more detailed and formalized guidance.

Option A (nature of audit) and D (organizational structure) are relevant but secondary. Option B (organization size) does not necessarily dictate internal audit’s needs as directly as its own size and maturity.