Hello. You did not show the passage to which the question refers, which makes it impossible for it to be answered. In the meantime, I will try to help.
Inferences are conclusions that are drawn from reading a text. In this case, it is only possible to answer your question by reading the text, however, we know that these conclusions are related to the behavior of a character called Balto. In this case, we can consider that the behavior of a person can bring conclusions about the personality of that character, about the tension level of a scene, about the tone and mood of a text, about the characterization of another character, about the plot stage and many other things.
I'd prefer books, Books also have the advantage of being able to describe everything in greater depth. While television is mostly composed of dialogue between characters, books can walk readers through scenes, characters' thoughts, and provide lengthier commentary.
