Answer:
at the start of each month
Explanation:
 
        
             
        
        
        
C, because the mountain cannot actually hold things.
        
                    
             
        
        
        
Answer: B. challenging established ideas.
Explanation: In the given conversation, we can see that Han is asking a question about a published article, he is asking about whether or not the article was biased because the writer could only want to stir up a controversy to get money and fame. By asking that question Han is showing the group discussion technique of challenging established ideas, so the correct answer is option B. 
 
        
                    
             
        
        
        
D it does bring a sense of duty to mind