Answer:
are
Explanation:
I think it is are because it makes sence and because if we add a word it would be are
 
        
                    
             
        
        
        
Those were the happiest years that Simone had known.
<h2>Hope this answer :)</h2>
 
        
                    
             
        
        
        
The answer to the question is letter "B. Rising Action". This is the part of the work where the problem and the conflict central to the plot is introduced. To this point of the story, things get more complicated for the main characters. The main characters may have done something to counter the conflict in this part but it is not yet resolved.