During a Workshop for Mothers, One of the Topics of Discussion

During a workshop for mothers, one of the topics of discussion was the increasing use of cell phones and other gadgets by children. During the session, the speaker requested parents to monitor their children's screen time and stressed the importance of exercise in a child's physical development. She requested parents to exercise more often so that their children would be encouraged to spend less time with their gadgets and more time involved in physical activities. Which of the following statements explains why the speaker put forth this request?

A) Studies show that screen time is associated with higher levels of language skills and cognitive control.
B) Studies show that a higher level of screen time increases the risk of obesity for low- and high-activity children.
C) Studies show that screen time is linked with high activity and stable sleep patterns in children.
D) Studies show that screen time is associated with higher connectivity between brain regions.