I believe that it is Man vs Nature because the thunderstorm creates an obstacle for said character.
I am not sure, because i am not super familiar with imagists, but i think i could be A. From what I gathered, imagists were a group of people who liked clear, sharp language that created a pristine image, so ordinary language seems like it would not appeal to them that much.
Answer:
i would say conflict if im wrong them I'm sorry
Explanation: