Which is a sign that a resident may require immediate hydration?

When assessing hydration needs in residents, dry skin serves as a significant indicator that immediate hydration may be required. The skin is one of the body's largest organs, and its condition can reflect overall hydration status. Dry skin can indicate a lack of sufficient fluids in the body, which may result from various factors, including inadequate fluid intake or increased fluid loss.

In the context of recognizing signs of dehydration, other choices do not suggest an immediate need for hydration. Bright, clear skin typically indicates good hydration, while aggressive behavior may be influenced by numerous factors, not exclusively related to hydration levels. High energy levels are also not associated with dehydration but rather suggest that the individual is well-hydrated and has adequate energy reserves. Thus, recognizing dry skin as a sign of possible dehydration aligns with the need for immediate hydration interventions.