Final answer:
The average 8- to 18-year-old spends 3 hours or more per day on average in front of a screen, doing very little to no physical activity.
Step-by-step explanation:
The question concerns the amount of time that the average 8- to 18-year-old spends per day in front of a screen with very little to no physical activity. According to the reference information, the correct answer is d) 3 hours or more. This is based on accounts indicating that most people now spend several thousand hours a year sitting still and staring at screens, and other provided statistics that suggest children spend a significant amount of time each day in sedentary activities.