C is most likely the correct answer.
Answer:
Headphones
Explanation:
It keeps you doing things especially when you are studying or learning something new from audio books.
And it also helps you to enjoy music if you are in boredom and motivates you in ways which are depending on you
The sentence is saying nonviolence is a powerful weapon that can destroy unrighteousness without even wounding it and can heal everything around it.
I don't know what story this is from or what is really happening; however, from what I can tell, the author uses the phrase "the annals of parental vigilance" to heavily imply that Daisy's parents are extremely rigid in how they raise her, in an orthodox fashion. "Annals" is defined as yearly record keeping, and "parental vigilance" means that the mother is one that is always watching and correcting her child (from what I can tell.