It’s B “form igneous rocks.”
Answer:i know its not b for sure i checked
Explanation:
i think you might have typed the question wrong? because there's a system called "skeletal system" that performs all the above given tasks
Phosphorus is, therefore important in cell division and development of new tissue.
It is also associated with complex energy transformations in the plant. Adding phosphorus to soil low in available phosphorus promotes root growth and winter hardiness, stimulates tillering, and often hastens maturity.
Hopefully this helps :)