B. <span>use multiple sources for your research </span>
The used rhetorical device is Hyperbole.
Saying that something is a billion times better is hyperbole because it is not really that much better, you would just be over exaggerating.
Answer: B. It is not cruel, only truthful
In the poem entitled <em>Mirror </em>by Sylvia Plath, it claims that the mirror is not cruel but only truthful. The mirror only reflects what is in front of it without any changes. The mirror sees and object for what it really is.