Final answer:
A normal glomerular filtration rate (GFR) falls within the range of 80 to 125 mL/min (option b). This rate indicates healthy kidney function, while a GFR below 60 mL/min/1.73 m² for a prolonged period suggests chronic kidney disease.
Step-by-step explanation:
A normal glomerular filtration rate (GFR) is typically within the range of 80 to 125 mL/min. For men, the average GFR is approximately 125 mL/min with a range of 90 to 140 mL/min. For women, the average GFR is around 105 mL/min with a range of 80 to 125 mL/min. Therefore, option b, 80 to 125 mL/min, is considered a normal GFR. The GFR represents a critical measure of kidney function, reflecting the amount of blood filtered by the glomeruli each minute. A GFR below 60 mL/min/1.73 m2 for an extended period indicates chronic kidney disease. The value is an important indicator of renal health and is used to detect early kidney damage and monitor kidney function.