Could you please explain that
<span>fire melt's ice and ice should put out the fire, but his fiery love makes her cold heart grow colder, and vise vers</span>
He uses various rhetorical means of proving his claims such as appealing to emotions. He presents the case of the King's behavior in such a way that is supposed to elicit an emotional response from the reader and motivate them to support the rebellion. Not only that but it is also masked as common sense so as to make it seem sensible.
Answer: most likely the last option. soliloquys are typically used to showcase the internal state of a character, that is only known by the audience and not by other characters in a play. in this case, Hamlet is hard to understand, so his soliloquy allows us to see him as he is.
hope this helped!