Which of the following is a sign of elder abuse that caregivers should monitor?

Unexplained injuries serve as a significant indicator of potential elder abuse, warranting careful observation by caregivers. When an elder individual presents with injuries that lack a clear explanation or rationale, it may suggest they are victims of physical, emotional, or neglectful abuse. Caregivers are trained to recognize that not all injuries are a result of accidents or natural aging processes; thus, remaining vigilant for signs that deviate from what can be reasonably anticipated is vital for the safety and well-being of the elder person in their care.

The other choices reflect positive developments or social engagement, which typically do not align with indicators of abuse. Increased social activities and active participation in community events suggest a level of engagement and safety, while an improved mood and behavior indicate emotional well-being. In contrast, the presence of unexplained injuries signals a cause for concern that necessitates further investigation and potential intervention to ensure the elder's safety.