Select the correct text in the passage.

Which line in this excerpt from Amy Tan's "Mother Tongue" shows that Tan changes her language depending on the audience?
I was giving a talk to a large group of people, the same talk I had already given to half a dozen other groups. The talk was about my writing, my life, and my book, The Joy Luck Club, and it was going along well enough, until I remembered one major difference that made the whole talk sound wrong. My mother was in the room. And it was perhaps the first time she had heard me give a lengthy speech, using the kind of English I have never used with her. I was saying things like "the intersection of memory upon imagination" and "There is an aspect of my fiction that relates to thus-and-thus"—a speech filled with carefully wrought grammatical phrases, burdened, it suddenly seemed to me, with nominalized forms, past perfect tenses, conditional phrases, forms of standard English that I had learned in school and through books…