Final answer:
Architectural features described and dialogues between characters reveal the setting of the passage.
Step-by-step explanation:
The details that best reveal the setting of the passage from By the Waters of Babylon are the architectural features described and the dialogues between characters.
Architectural features, such as the description of buildings and structures, can provide clues about the setting. In the passage, there may be references to the architecture of the city or the specific buildings the characters encounter. Dialogues between characters can also give insights into the setting by revealing information about the culture, society, and time period in which the story takes place.