It speaks to the dramatic social, political and technological changes of the last 50 years, and it questions many of society's values and assumptions—a tendency of postmodernism, a concept sometimes used to describe contemporary art. What makes today's art especially challenging is that, like the world around us, it has become more diverse and cannot be easily defined through a list of visual characteristics, artistic themes or cultural concerns.
D. The average 8 to 18-year-old spends <em><u>3 hours or more</u></em> per day on average in front of a screen doing very little to no physical activity.
