Question

which organ system alters kidney function?
a the respiratory system
b the excretory system
c the nervous system
d the immune system

Explanation:

The nervous system can alter kidney function. Nerves can influence blood - flow to the kidneys and the release of hormones related to kidney function. The respiratory system is mainly for gas exchange, the excretory system is related to the overall function of waste - removal (kidneys are part of it but not an altering system for kidneys), and the immune system is for defense against pathogens.

Answer:

C. the nervous system