Final answer:
The normal GFR range for healthy individuals is 90-120 mL/min, which is critical for assessing kidney function and the stages of CKD.
Step-by-step explanation:
The normal range for the Glomerular Filtration Rate (GFR) is typically cited as approximately 90 to 120 mL/min in a healthy individual. This range can vary slightly based on gender, with averages of about 125 mL/min for men and about 105 mL/min for women. GFR is a critical measure of kidney function, indicating how much plasma is filtered through the kidneys. Understanding GFR is also essential when assessing the stages of chronic kidney disease (CKD), where a GFR below 60 mL/min/1.73 m² for 3 months is indicative of the disease.
Using the options provided, the normal range for GFR is therefore Option a: 90-120 mL/min.