Answer:
Walking puts less pressure on your joints, and you may be able to do it for longer. Running in place is more stressful on the body. However, it may burn more calories than walking, which may lead to increased weight loss. It also has a more positive effect on cardiovascular health.
I think it would be B because it is very true that kids don't get out an do activity really at all
Research states that the brain is sensitive to the electromagnetic radiation from cell phones, and can even stimulate brain activity.