I think that Shakespeare is referring to Winter. I think so because he says,
“Yellow leaves, or none, or few do hang. Upon those boughs which shake against the cold.” Which means that the leaves are falling off of the trees and also that the tree stumps are shaking against the cold. All these things happen is winter. Hope this helped!
A motif is a recurring element within a story and archetype brings in elements based on what we know or expect like a pattern
Although many of these answers could be correct, I would argue that B is the most correct one?
In the rest of the play, Macbeth is often portrayed as a coward, often unwilling to go through with a plan. His sudden display of bravery is very new, perhaps driven by his insanity.
Number three is the correct answer, since it uses a first-person point of view.
Hope this helps!