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.
Your question is unclear or incomplete, can you give more details?
D. the five senses.
imagery is visually descriptive or figurative language
Answer:
C. to provide a history of African American surgeons
Answer:
You can expect the vegetarians to support you.
