The correct answer is C.
A dystopia is a "futuristic, imagined universe in which oppressive societal control and the illusion of a perfect society are maintained through corporate, technological, moral, or totalitarian control". It is the opposity of an utopia.
A world that has plunged into chaos because of the government removing the right to electricity from rebel communities is an example of a scenario for a dystopian story, since it shows how the oppresion of the government leads to a disastrous change on society's functioning. And it also shows how this scenario is maintained by the government's totalitarian control.
The rest of the answers, in which people disappear, aliens replace teenagers and a genius boy is discovered living in a library cellar, would make for good sci-fi scenarios rahter than dystopian societies.
No just once and that whole paragraph is suppose to be about that topic
Answer:
They are techniques used to build logical support for an argument. They make nonfiction writing more entertaining. They are rhetorical devices used for persuasive effect