Final answer:
The serious kidney disorder that may occur after a streptococcal infection is B) glomerulonephritis.
Step-by-step explanation:
The serious kidney disorder that may occur 1-6 weeks after a streptococcal infection is B) glomerulonephritis.
Glomerulonephritis happens when the glomeruli in the nephrons, the functional units of the kidneys, are damaged from inflammation.
Although Streptococcus pyogenes does not directly infect the kidneys, immune complexes formed between S.
pyogenes antigens and antibodies can trigger an inflammatory response in the glomeruli, leading to glomerulonephritis.