Final answer:
Dialogue is used to introduce characters, giving them distinct voices and personalities, and helps create an immersive narrative. The author most likely used dialogue instead of description in the passage to show who the characters are.
Step-by-step explanation:
The author most likely used dialogue instead of description to show who the characters are. By introducing the characters through their own words, the author helps to establish the narrative and character identities in a more engaging manner than a plain description might. It immediately gives the reader a sense of the characters' personalities and helps to create a more vivid and immersive narrative.