Respuesta :
The answer Quindlen seeks from readers is that they recognize that the ethnic groups present in America live similarly to their ancestors and interact with Americans in the same way. She leaves this answer open to provoke reflection in the reader.
Although you didn't show the text this question refers to, we can find that text in questions like yours, which show the text attached below.
In this text, we can see that Quindlen is showing that:
- Conflicts with ethnic groups living in the US are the same no matter the time.
- Even though America has evolved and become more diverse, the life of foreigners today is still difficult, like the life of foreigners in the last century.
- This shows that America is still a xenophobic place and that nothing has evolved in this regard.
- These problems can be seen even in more globalized regions like New York.
You can get more information about this at the link below:
https://brainly.com/question/10519036?referrer=searchResults

Answer:
a) America's huge diversity has caused certain ethnicities to not intertwine.
b) Quindlen leaves the answer open-ended because she wants the reader to come to the conclusion on their own.