Final answer:
Hugo's behavior of throwing the birthday gift aside without regard for his mother's feelings is typical behavior for a 3-year-old.
Step-by-step explanation:
At 3 years old, Hugo's behavior of throwing the birthday gift aside without regard for his mother's feelings is a typical behavior for a 3-year-old. Toddlers of this age are exploring their world and learning to assert their independence. It is common for them to show preferences for certain things and to act on their desires without considering the feelings of others. This behavior is a part of their developmental stage.