Which Conclusion Would Be Correct Based on the Observation That

Essay

Which conclusion would be correct based on the observation that the number of nephrons in a 25 yr. old male is the same as when that individual was 5 years old?
a. the individual has had no kidney damage between 5 years and 25 years of age
b. the individual has had significant kidney damage at some point between 5 years and 25 years of age
c. the individual's kidneys are improving their function even as the kidney continues to age
d. the individual's kidneys are likely receiving reduced blow flow which prevents the nephrons from growing in number