When developing the scope of an audit engagement, the internal auditor typically considers factors that directly impact the audit's objectives, risks, and execution. This includes the potential impact of key risks (Option B), the expected outcomes and deliverables (Option C), and the operational and geographic boundaries (Option D). While the need and availability of automated support (Option A) may be a practical consideration for how the audit is conducted, it is not fundamental to defining the scope of the audit engagement itself. The scope is primarily concerned with what is to be audited and why, rather than how the audit will be performed.
Reference:
IIA Standard 2200: Engagement Planning.
IIA Practice Guide on Audit Engagement Planning.