Final answer:
The theme of "Your World" is about the size of one's world being determined by oneself.
Step-by-step explanation:
The best line to infer the theme of "Your World" is: "Your world is as big as you make it." This line suggests that the size or scope of one's world is not determined by external factors, but rather by the individual's perception and actions. It conveys the idea that one's world can be expanded or limited based on their choices and perspective.
Learn more about Theme in literature