Which is the most reliable method for monitoring improvement when restoring fluid balance?

A. Vital signs provide useful information about hemodynamic status but can be influenced by many factors and may not reflect subtle changes in fluid balance. B. Daily input and output help track fluid intake and losses but may not account for insensible losses or shifts between compartments. C. Daily weights are the most reliable method for assessing fluid balance because changes in body weight directly reflect changes in total body fluid, allowing early detection of fluid gain or loss. D. Skin turgor can indicate dehydration but is less accurate in older adults and may not reflect gradual changes in fluid status.