Final answer:
The phrase that best uses persuasion in the excerpt is about the enjoyment of trying different ethnic foods and sampling books from different areas of the world.
Step-by-step explanation:
The phrase from the excerpt that best uses persuasion is:
I don't know anyone who doesn't like to sample different ethnic foods, the breads of many many groups; just as many of us enjoy sampling books from different areas of the world.
This phrase is using persuasion by highlighting the similarity between trying different ethnic foods and sampling books from different areas. By making this comparison, the author is trying to convince the reader that exploring different cultures through food and literature is enjoyable and beneficial.