Answer:
The correct answer will be option-All the choices are correct.
Step-by-step explanation:
Kidneys are the bean-shaped organs which occur in pairs in the peritoneal cavity. The kidneys are located posterior to the liver.
The main function of the kidney is to filter the blood in organisms and the formation of urine as a filtrate material which is excreted out from the human body.
The mechanism of filtration of blood is very complex as the mechanism not only filtrate the blood but also regulates the water and salt balance in the blood. It also maintains the concentration of hydrogen ions in the blood. These all functions are associated with the homeostatic process.
Kidney helps in maintaining the level of glucose or maintaining glucose homeostasis as kidney helps in the reabsorption of glucose in proximal tubule of nephron and gluconeogenesis as about 20% of synthesis of glycogen in body is performed by the kidneys.
Thus, the selected option is the correct answer.