Question

multiple cholce question
regulating the volume and composition of body fluids is the primary function of the

kidneys
bladder
liver
blood

Explanation:

The kidneys filter blood, remove waste products, and regulate the volume and composition of body fluids (such as water, electrolytes). The bladder stores urine. The liver has functions like detoxification, protein synthesis, and metabolism of carbohydrates, lipids, and proteins. Blood is a fluid that transports substances but its main function is not regulation of body fluid volume and composition in the way described.

Answer:

kidneys