Hi! 
I agree that the answer is D. Retiring. It seems to be the most sensible choice.
        
                    
             
        
        
        
It means to be not cared for
        
                    
             
        
        
        
1. The whole class laughed loudly at the story. 
complete subject: the whole class
complete predicate: laughed loudly at the story
2. The whole class laughed loudly at the story.
simple subject: class
simple predicate: laughed
3. Twelve hours passed without a word from any of the group.
simple subject: hours
simple predicate: passed
4. The workmen repaired the dam.
complete subject: the workmen
complete predicate: repaired the dam
        
                    
             
        
        
        
Answer:
More specific plz.............