Final answer:
An incident that demands a report is when a resident accuses an NA of abuse, as this is a serious allegation and aligns with elder abuse concerns.
Step-by-step explanation:
The incident considered an occurrence that requires a report to be completed in the scenarios described is C) A resident accuses an NA (Nursing Assistant) of abusing her. Such an accusation is a serious matter that aligns with elder abuse concerns highlighted by the National Center on Elder Abuse (NCEA). Any allegation or suspicion of abuse must be thoroughly documented and investigated to protect the wellbeing of residents in care facilities. In contrast, a resident using the call light frequently, yelling at a family member, or a Nursing Assistant arriving late to work, while potentially concerning, do not necessarily constitute reportable incidents of alleged abuse.