Answer:
We need some context to help you: the name of the work, the lines...something.
Explanation:
The correct answer is the Nervous system and the Endocrine system. These two systems control all other systems and by doing it create homeostasis in the body.
I would say that the best answer would be the last one.
Answer:
to show the reader how music formats have changed over time is the correct answer.
Explanation: