The right answer is A. Elimination
The arterial blood that enters the kidneys through the renal artery passes through the interlobular artery, the afferent arteriole to eventually reach the elementary unit of the renal machinery: the glomerulus, located inside the nephron. A kidney contains about a million nephrons. Each day, the kidneys filter about 180 liters of blood and produce an average of 1500 mL of final urine.
Tubular reabsorption and secretion are processes that occur in the nephron (after glomerular filtration) and form, with glomerular filtration, the basic renal processes.