They act as messengers to the prophets . They take care of people. They record everything a person does, and this information is used on the Day of Judgement . Izrail, the Angel of Death, takes people's souls to God when they die.
I would say A, but idk. When I read this short story and researched about it for my dissertation, all research pointed to an "end of the world" scenario in the future where only technology prevails.
This seems kind of opinionated; however, I would go with the most vague, least specific question, because one could probably write more about that topic. So, "How many teens participate in extracurricular activities every year?" it is!