Answer:
It describes why the author writes about the events and their causes.
Explanation:
The author explains the reason why he began writing about Yellow Fever. The book by John H. Powell, which he read some six years ago was an eye-opener to him.
The book made details about the Philadelphia epidemic more real to him and so, he decided to begin writing about the plague. He, and many other writers referenced Powell in their works.
The character of Gerasim helps the protagonist to attain spiritual freedom by helping Ivan IIyich by caring for him in his last days, regardless of the challenge. The correct answer is A.
The correct answer is the last one.
Non-standard English would probably be the best answer
