I am not sure what you are asking here.  If you are asking what parallel structure looks like, you would have to keep the verb tenses the same.  For example, Sam likes to ride bikes, hike trails, and bake bread.  What is does NOT look like: Sam likes to ride bikes, go hiking on trails, and baked bread with her grandmother.  The structure words would be based of the passage you were given, which isn't supplied here.  If you were asked to write a paragraph using a parallel structure, follow the example given here. 
 
        
                    
             
        
        
        
Answer:
While it is difficult to determine exactly how many Natives lived in North America before Columbus, estimates range from a low of 2.1 million to 7 million people to a high of 18 million.
 
        
             
        
        
        
Answer:
Hrothgar
Explanation:
Now Holy God has, in His goodness, guided him here to the West-Dane, to defend us from Grendel.
 
        
             
        
        
        
Answer:
<h2>
Its D. Glittering generalities </h2>
Explanation:
<h2>Took the test edge 2020</h2>