Which of the following is a common sign of dehydration?

Dark, concentrated urine is indeed a common sign of dehydration. When the body is not receiving enough fluids, it conserves water, which leads to a decrease in urine output and an increase in the concentration of waste products in the urine. This concentrated urine often appears darker in color, which serves as an important indicator that the individual may not be adequately hydrated.

Maintaining proper hydration is vital for various bodily functions, including regulating body temperature, maintaining joint lubrication, and ensuring optimal organ health. Recognizing signs of dehydration, such as dark urine, can help initiate interventions to restore fluid balance and prevent further complications.