I think the answer is either ''A source'', or ''evidence''. so its A, or C
The statement that would best summarise the excerpt from Leo Tolstoy's work would be that "<span>Ivan Ilyich could recall pleasant days only in his childhood." In addition to that, the character is reminiscing the things that happened in his younger days. Leo Tolstoy is among the most prominent authors in Russian literature.</span>
We can't help you because we can't read your mind, but some suggestions are heights, spiders, presentations, and snakes
Hope this helps!