"Very good." Father took the card and put it carefully away in his pocket. "Did you see that demon's face, Moon Shadow? He was surprised when I fixed his carriage. Machines aren't all bad. Some of them may be the true magic. We might not be able to speak too well with the demons, but in machines there's a language common to us all. You don't have to worry about your accent when you're talking about numbers and diagrams."

I was getting excited. "Maybe the Dragon King was right. Maybe the magic takes a different form in our land. Maybe that's why you don't need words for it."

Father wiped his hands on an old rag in the back of the wagon. Then he held up his hands. He had not been able to get off all the oil, for the lines of his hands were still black.

"Well, you know, repairing the horseless carriage was a lot like healing the Dragon King. My hands just seemed to know what to do."

In this passage, what revelation do the narrator and his father have about the setting?

that the Americans may not be demons after all
that magic is more important than modern machinery
that a common language is not always necessary for communication
that it will be difficult to find a common ground with the Americans

Revelation that the narrator and his father have about the setting is Option C: that a common language is not always necessary for communication

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.

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.

the correct answers are:

c. “never in the history of his people had a man married a woman who spoke a different tongue.”

d. “‘it has never been heard,’ was the verdict of an old man speaking a few weeks later.”

e. “this man had come with others to commiserate with okeke.”