A is possibly your best option, even as themes can be impacted by setting in many other ways......theme is the main and idea of the piece of literature and a theme can also symbolize a primary conflict.
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Spender uses a number of different nature symbols in order to convey his feelings about his childhood. He describes the children he was afraid of and bullied by as tigers and dogs, and writes about them being on cliffs, by streams, and behind bushes. These techniques portray the children's actions as animalistic, while drawing the reader into the fear and tension of the speaker.
