Contents in the peritubular capillaries are actively transported into proximal and distal convoluted tubules in a process known as

The process is known as secretion

Explanation:

When we talk about how Contents in the peritubular capillaries are actively transported into proximal and distal convoluted tubules in a process known as secretion, then we need to mention the kidney as the chief organ that made this possible. Secretion which has waste substance such as hydgoen ions, excess water removed from the blood is part of the process involved in the excretion of urine. Peritubular capillaries are important in the reabsorption and secretion process of urine formation and removal to the bladder. From the question, when they drain their contents into proximal and distal convoluted tubules then the process is called secretion.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.