I think that the answer is d
        
             
        
        
        
2. In 1945 a U.S. Air Force bomber accidentally crashed into the Empire State Building, killing fourteen people and damaging the 78th and 79th floors.  
4. No infinitives are used. Sentence 4 contains a gerund.
5. includes Steve writing about himself in the first person.
That what i got and if any incorrect then sorry I try my best. 
 
        
                    
             
        
        
        
Saprophytes are fungi that are capable of getting nourishment from decaying plants in order to live their lives longer. They are known to stay in rich soil and in various dead trees. They often reside in decaying wood as well.
        
                    
             
        
        
        
D:  The cell is the basic unit of structure and organization in organisms.  Explanation: cause I got the question right.