The plot is the main event or purpose of a story, while the theme is the subject.
Hope that helps :)
Theme or tone because in the theme the Narrative speaks like what is happened and more but in tone you will know when he speaks like one.
Answer:
To show that his faith lies with her she is his faith
The definition of straw man argument is to make a argument that wasn't presented, so you're right the answer would be A.