Hmmm I believe it is colloquialism and social context !! if not I'll update my answer !!
        
                    
             
        
        
        
I would say the answer is B
        
                    
             
        
        
        
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.
 
        
             
        
        
        
Answer:
The colonists have petitioned, remonstrated (argue), supplicant end (request), prostrated themselves before the throne, and have implored its interposition to arrest the tyrannical hands of the ministry and parliament
Explanation: