The Question and Answer section for The Death of Ivan Ilych is a great resource to ask questions, find answers, and discuss the novel.
Gerásim is the name of the peasant boy, who takes care of Ivan.
The doctor suspects Ivan's illness has something to do with his appendix.
I'm sorry, "which of the following" means there were multiple choice answers provided with the question posted above. Your question cannot be answered without the choices provided.