Answer:
I believe that Santiago is dynamic character in "The old man and the sea" 
Explanation:
Santiago is an old fisherman in Cuba who, at the beginning of the book, has not caught anything for eighty-four days.  Santiago's quest for the great catch that will save his career. Santiago endures a great struggle with a uncommonly large and noble marlin only to lose the fish to rapacious sharks on his way back to land.  Santiago ends with his spirit undefeated. 
Remember a dynamic character also undergoes changes throughout the narrative, due to conflicts he encounters on his journey. A dynamic character faces trials and tribulations, and takes time to learn from his encounters, his experiences, and his mistakes, as well as from other characters. 
So if by any chance you think I am wrong let me know and also think back to the story and try to figure out what characters in the book face "trials" and how that person learns from his/her mistake :) you will do great I believe in you!!
The things that are bold are hints of what your answer should be :) <3
 
        
             
        
        
        
Answer:She died on Feb. 21, 1999, in Chapel Hill, N.C. ( I think you would need a bigger sentence) I think she was a terrific scientist. ( You can't just think. If your not sure then just don't add it or research it more.) Elion also discovered new ways to test drugs. ( Needs longer sentences add comas or something to make it longer!)
 
        
                    
             
        
        
        
I belive it is D because it is a scientific reasons and it gives you data to learn off
        
             
        
        
        
Available water, temperature and soil!