Analogy is a powerful rhetorical device because the comparison of an object to an abstract idea makes an idea more vivid; and due to the fact that the comparison produces vivid pictures and has emotional weight.
In other words, the first option and the thrid one are correct.
A comparison is a literary divice used in order to compare two things that have similar features. It creates a relationship based on parallels or connections between two ideas leading to a new concept.
