According to the text, the analogy that best describes united states society today is

The analogy that best describes united states society today is "the salad bowl".

The salad bowl idea proposes that the mix of the various societies of United States occupants consolidate like a plate of mixed salad, rather than the more conventional thought of a cultural melting pot. New York City can be considered just like a "salad bowl".

It could be anything, recent improvements in technology/telecommunication/internet have increased the pace of globalization.generally, it has something to do with technology. globalization means that people around the world are brought together through technology which speeds things up. so maybe some of those options could be correct. : )