An engagement classifies as a consulting service provided by the internal audit activity when the internal auditor assigned to the engagement was specifically requested by management of the area under review. This scenario typically indicates that the engagement is designed to add value and improve an organization's operations, which aligns with the definition of consulting services according to IIA standards.References: The IIA's definitions and guidelines regarding the nature of consulting services, which often involve engagements initiated at the request of management for specific expertise or advice.