Answer:
The answer is Letter B
Step-by-step explanation:
1. Proximal Convoluted tube: responsible for reabsorption of nutrients and substances that the body needs.
2. Loop of Henle: which is a thin-lobed structure that controls the concentration of the urine.
3. Distal convoluted tubule: it regulates sodium, potassium and pH.
4. Collectin duct: it regulates water and sodium reabsorption.