In a healthcare environment, identifyingwho is impactedduring a critical incident is essential to patient safety and continuity of care. Within theCommon Service Data Model (CSDM), the most effective way to determine impacted users is throughService Offerings, particularly when they are definedby department or location.

Service Offeringsrepresent how a service is consumed by specific user groups. In this case, a patient management system may have different offerings for departments such as Emergency, Inpatient Care, or Outpatient Services, or be scoped by hospital location. These offerings explicitly defineconsumer context, allowing incident responders to immediately identify which clinicians, staff, or facilities are affected.

Option D (Affected CI related list) identifies technical impact but does not translate that impact intouser or consumer context. Option A provides historical insight but does not identify current impacted users. Option C (service environment) helps differentiate production vs non-production but does not identifywhois impacted.

By leveragingService Offerings by Department or Location, the provider can quickly notify the right users, prioritize response based on clinical impact, and coordinate mitigation effectively—aligning with CSDM and ITIL best practices.

Therefore, the correct answer isB – Service Offerings by Department or Location.