The answers are A, D and G.

Blank (i) --> Here, we are looking for a word that describes Tolstoy's attitude or stance towards his nonfiction works in comparison to his novels and short stories. "A preference for" fits well in this context. It suggests that Tolstoy had a liking or inclination towards his nonfiction works in comparison to his other literary creations.
A. a preference for: This fits well in the context, suggesting that Tolstoy expressed a liking or preference for his nonfiction works compared to his novels and short stories.
B. an aversion to: This implies a strong dislike or repulsion, which doesn't align with the context. Tolstoy is portrayed as expressing a preference, not a dislike.
C. an indifference toward: This suggests a lack of interest or concern, which doesn't convey the positive stance that Tolstoy is expressing towards his nonfiction.

Blank (ii) --> This part is about Tolstoy's ability or difficulty in embracing his role as a fiction writer. The word "suppress" fits here. If Tolstoy's nonfiction side was dominant, his fiction-writing side might have been hard to suppress, indicating a struggle to hold back or control it.
D. suppress: This fits well in the context, suggesting that Tolstoy's fiction-writing side was hard to hold back or control.
E. identify: This doesn't fit the context. The sentence is not discussing the difficulty in identifying Tolstoy's fiction-writing side but rather the challenge in controlling it.
F. incite: This means to encourage or stimulate, which doesn't match the intended meaning in this context.

Blank (iii) --> This blank requires a word that contrasts with the nature of Tolstoy's nonfiction works. "Didacticism" fits well here. Didacticism refers to a tendency to teach or preach moral lessons. The sentence suggests that Tolstoy's novels, despite having moral concerns, are quite different from the didactic nature of his nonfiction. It highlights a contrast in the styles of the two types of writing.
G. didacticism: This fits well in the context, emphasizing the contrast between the novel and the didactic nature of Tolstoy’s nonfiction.
H. fluidity: This doesn't match the context. The sentence is comparing the novel's nature to the nonfiction, and "fluidity" doesn't convey the intended contrast.
I. creativity: This option is not the best fit, as the sentence is focused on the didactic nature rather than creativity.