Final answer:
The word 'social norms' is the most likely word to appear in an essay about smartphones' impact on Americans' work and play.
Explanation:
Social norms would be the word most likely to appear in an analytical research essay about how smartphones affect the way Americans work and play. Social norms encompass the accepted behavior in a society, which would be crucial to examining the impact of smartphones on daily routines and interactions.
Learn more about smartphones' impact on work and play here:
https://brainly.com/question/38781208
