Studies Have Shown That

Studies have shown that

A) children in well-off families tend to get fewer hours of high-quality sleep than children in poorer families.
B) children under a great deal of stress tend to get more hours of high-quality sleep than children under less stress.
C) children tend to require less sleep if they drink a lot of sodas and eat a lot of snack foods during the day.
D) children who watch a lot of television and play video games until bedtime tend to get fewer hours of high-quality sleep than those who don't watch a lot of television and play video games until bedtime.