Answer:
see the explanation 
Explanation:
A classification or division essay groups objects, people, or events into categories by the characteristics that they share. Usually the writer begins with a group of people or things and then separates them into subgroups or types. There are a several steps to writing an effective division or classification essay.
 
        
             
        
        
        
D is the best answer
(I am just using my common sense) 
Hope I helped :)
        
             
        
        
        
Answer:
Enzymes speed up a chemical reaction making the reaction easier to occur.