We would need more information, are you sure this is all there is?
With the information that is given I believe that the answer is:
C. Constantly changing pieces of literature.
Answer: Abraham Lincoln, the 16th President of the United States, was assassinated by well-known stage actor John Wilkes Booth on April 14, 1865, while attending the play Our American Cousin at Ford's Theatre in Washington, D.C. https://en.wikipedia.org/wiki/Assassination_of_Abraham_Lincoln
Explanation:
Why don’t you try it yourself instead of cheating-
Answer:The Author's Point of View
Explanation:
