Leartes and Fortinbras share the same fate as Hamlet, the three of them lost their fathers in unfortunate circumstances. They feel the same kind of grieve of losing a loved one. But each reacts, differently. Their behaviour play a close related trait towards advice and duty, action versus inaction and sanity versus madness. Hamlet and Leartes want to get revenge, while the first is looking forward is getting the throne back and considers the consequences of his actions. Leartes, on the other hand, is blinded by his feelings (madness) and takes belligerent actions without thinking on the consequences.
Hamlet and Fortinbras, want to take revenge both. Whereas Hamlet only seeks to get the throne back and keeps on devating on how and when to take action, Fortinbras wants to clean his family's name and fights in an orderly fashion, with the use of an army.
Hello. You did not inform the text to which this question is referring, which makes it impossible for it to be answered accurately, however, I or try to help you in the best possible way.
It is only possible to actually know the tone of the text by reading it. However, if we analyze the sentence "I'm puzzled at how this so-called a" thing "" we can infer that it contributes to a tone of curiosity and distrust, since the speaker of this sentence, feels like this in relation to "thing "and displays this feeling to the reader.
The answer is #2! :) I hope it help you