In "The Most Dangerous Game," Rainsford's complex traits do indeed advance the plot. The correct responses from your options are:
- His superb skill at hunting enables him to outwit Zaroff.
- On the ship, his curiosity leads him to fall overboard.
Rainsford's hunting skills are crucial for his survival and eventual victory against Zaroff, who is also a skilled hunter. His curiosity drives the initial plot when he investigates the sound of gunshots, leading to his accidental fall overboard, which ultimately sets the entire story into motion.
The other two options do not accurately capture how Rainsford's traits advance the plot; his admission about animals having feelings is not a significant plot point in the story, nor does he kill Ivan; rather, he uses his cunning to defeat Zaroff to escape.