Which observation would indicate a patient might be dehydrated?

Dizziness and confusion are both common indicators of dehydration. When the body loses more fluids than it consumes, it can lead to a decrease in blood volume, which can affect blood circulation and the delivery of oxygen to the brain, resulting in symptoms such as dizziness. Additionally, confusion can arise as the brain lacks adequate hydration to function optimally. This can manifest in cognitive disturbances, making it difficult for the patient to think clearly.

In contrast, increased appetite may suggest a variety of conditions but is not directly associated with dehydration. Clear and abundant urine typically indicates proper hydration, as concentrated urine is a sign of fluid deficiency. Enhanced physical performance is unlikely in a dehydrated state since the body lacks the necessary fluids to maintain energy levels and physical capabilities, often leading to fatigue and decreased performance. Therefore, dizziness and confusion are strong indicators of dehydration, making this the correct choice.