The visceral layer of the glomerular capsule a fenestrated endothelium, like the glomerular capillaries plays no role in formation of filtrate is a simple squamous epithelium that contributes to the structure of the capsule clings to the glomerulus, consists of branching cells call podocytes, and plays

Consists of branching cells call podocytes, Clings to the glomerulus, and plays an important role in the formation of filtrate.  The part of the nephron whose epithelial cells are most responsible for resorption and secretion is the proximal tubule. In the juxtaglomerular apparatus, the macula dense  belongs to the terminal nephron loop.

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.