He used riddling to talk to Smaug I think because he wanted to stall and waste time as he figured out a plan. He also used riddles to talk to Golem who he clearly was trying to stall to save himself as Golem wanted to kill and eat Bilbo. So it is a reoccurring theme of Bilbo and it makes sense.
The dove is a sign of peace
I would say either A because you need evidence for an argumentative essay or C since your going to need to write a rebuttal
Answer:
What poem is it , there's no image