Comprehensive and Detailed Step-by-Step Explanation:
* Reference to IIA Standards:
* Standard 1120 - Individual Objectivity: Internal auditors must perform engagements with honesty and without any bias.
* Serving in an operational or management role in the area being audited within the past year can impair objectivity, as the auditor may unconsciously favor or critique processes they were involved in developing or managing.
* Reasoning:
* Option Bis correct because recent involvement in the audited area could compromise objectivity, leading to potential conflicts of interest or biased assessments.
* Option A(integrity) is less likely impacted, as integrity relates to adherence to ethical principles and honesty.
* Option C(competency) is not affected, as the individual's skills and knowledge remain intact regardless of the recency of their involvement.
* Mitigating Actions:
* The chief audit executive (CAE) should evaluate and address potential impairments to objectivity, possibly assigning the auditor to a different engagement.