Answer:
C. Shape is the correct answer
Explanation:
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Considering the attached figure; the functional area of the kidney at letter b; is the Renal pyramid.
Kidney pyramid or renal pyramid consist of tubules that transport urine from the cortical, or outer part of the kidney, where the urine is produced, to the calyces, or cup-shaped cavities where the urine collects before passing to the bladder through the ureter.
Photosynthesis creates glucose and oxygen. used for humans to inhale and then exhale carbon dioxide to go back into plants and redo this cycle.
I think the first option is the answer.
Septoplasty is the surgical procedure.