Answer:
The first-person narrative is effective because Esperanza is narrating her own story and this gives the reader a deep insight into her feelings, emotions and thoughts at each stage of her life. This creates a tone of complicity between the reader and the narrator.
Step-by-step explanation:
Esperanza is the main character of the book "The house on mango street". It is in this book that Esperanza narrates her experiences throughout her life, being a Mexican-American girl and living in a community where machismo, patriarchy, domestic violence, physical abuse and low economic conditions prevailed.
As you can see, the book deals with deep and impacting themes. This combined with a first-person narrative makes reading even more immersive and influential, because it allows the reader to have a complete and uncensored view of Ezperança's thoughts, emotions and feelings in the face of these realities. This creates a tone of reality in the story and allows a tone of complicity between reader and narrator.