I'm pretty sure it is physical and mental development
I have a question. Where are "which of these?"
In order to show my commitment towards my health is by keeping a balance between exercise and food sources.
Your answer would be the Kidney
The kidney was the first organ to have an artificial replacement; the dialysis machine invented by Kolff in the 1940s.
Answer:
The pelvic bone supports your "trunk". Which is important because the area that it supports holds vital organs needed to live.
Explanation: