The correct answer is D) There is no single topic sentence. a topic sentence is used to summarize what the writing is about, and there is no sentence that does that in this piece.
If your choices are the following:
A. Ivan Ilyich's has a dreaded fall that eventually leads to his illness.
B. Ivan Ilyich's colleagues react to finding out about his death and reminisce about his life.
C. Ivan Ilyich carries on a successful professional life and a deteriorating family life, when the onset of his illness occurs.
D. Ivan Ilyich lives out his full life story, from a young boy to a public prosecutor to a member of the Court of Justice.
Then the answer is c.
