Answer:
Revelation that the narrator and his father have about the setting is Option C: that a common language is not always necessary for communication
Step-by-step explanation:
'Dragonwings' by 'Laurence Yep', is a story about Moon Shadow who is trying to adjust with his new life in America. He gets to know abut the racism they face and fears about it. Even he experienced hostility from whites. They are referred as white demons of San Francisco.
In the given excerpt, father and son are having a conversation about language. He said that demons may not speak the language they speak but still one can communicate. This is because there is always a common language which helps communicate people. No one has to worry about accent as numbers and diagrams are being discussed with the machines. Thus, statement C is most appropriate.