The best answer would be B because, for instance, if someone is bothering you and you tell the teacher, you say how you feel if you don't know, it just wouldn't make sense. You get what I am trying to say right? I hope this helps:)
Teens should do at least 60 minutes of physical activity per day. This physical activity can be moderate things such as walking. At least 3 days a week teens should do more intense physical activity.
Leadership definition is the ability to lead a group of people or an organization.
