Answer:
show the Lins becoming Americanized while maintaining their Chinese customs
Explanation:
The main reason as to why the author included this detail in the writing was to show the Lins becoming Americanized while maintaining their Chinese customs, as they began taking up different American norms in order to fit into the community better. The whole story revolves around the fact that people can share similarities even when they appear very different at first.
Pretty sure it's the First and Third sentence.
