Q1: A Because Banging modifies noise.
Q2: B, no name it given, and it isn't the narrator, Robert Frost.
B. he pauses to listen for voices y because he wants to know who it is
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.
First, Queen Gertrude in Shakespeare's novel is the queen of Denmark, and mother of Hamlet.
In the story, you can only analysis Gertrude by what others say about her, not by what she says. First, she only cares about her outside look and external pleasure. She's very sexually, which made Hamlet angry on her. She was even involved in plot of Claudius during his murder plan, and of course she announced everything when Hamlet confronted her: From adultery, to murder. But, as we can see later, all her lies were to protect everyone around her. She could have told the king that Hamlet killed Polonius, but she lies to him to protect Hamlet. Her love for everyone is big, since she cares about everyone and try to protect them as much as she can, staying loyal and faithful to them. But at the end, she gain her forgiveness for her sensual nature and shallow. But she dies drinking from a poison goblet.
Hope this Helps! :)