A client expresses concerns about frequent urinary tract infections (UTIs), constipation, fatigue, brain fog, and dry skin. Recognizing that the average adult's body mass of water percent body mass is _______ the healthcare provider identifies these symptoms as potential signs of dehydration and inquires about the client's water intake.

A. Urea: Urea is a normal nitrogenous waste product excreted in urine; its presence alone is not indicative of diabetes (it reflects protein metabolism/kidney function).
B. Creatinine: Creatinine is a normal urinary waste product used to assess kidney function; its presence alone is not diagnostic of diabetes.
C. Glucose: Glucosuria (significant glucose in urine) suggests hyperglycemia and impaired glucose handling (common in diabetes) -indicative of a diabetic problem if present in large amounts.
D. Ketones: Ketonuria (significant ketones in urine) indicates fat breakdown/ketosis and is a sign of uncontrolled diabetes (e.g., diabetic ketoacidosis) -indicative of diabetic metabolic disturbance.

A. It coordinates sensory perception and integration:That is the primary role of the nervous system (sensory integration, not reproduction).
B. It synthesizes hormones for energy metabolism:Endocrine organs (e.g., thyroid, pancreas) are chiefly responsible for metabolic hormone synthesis; while reproductive organs produce sex hormones, their primary system role is reproduction.
C. It ensures the continuation of the species: The main biological function of the reproductive system is to produce gametes and enable fertilization and development, ensuring species propagation.
D. It regulates fluid balance within the body: Fluid/electrolyte balance is primarily regulated by the renal and endocrine systems (kidneys, ADH, aldosterone).