A nurse is assessing a client who has chronic kidney disease for fluid volume increase. Which of the following provides a reliable measure of fluid retention?

The correct answer is A: Daily or weekly weight. Weight measurement is a reliable indicator of fluid retention in clients with chronic kidney disease because excess fluid can lead to weight gain. Monitoring weight daily or weekly allows for early detection of fluid volume increase. Sodium level (B) is important but may not directly reflect fluid status. Tissue turgor (C) is more related to hydration status than fluid retention in the context of chronic kidney disease. Intake and output (D) monitoring is useful for assessing kidney function but may not be specific for fluid retention.