Why is there a growing concern over the physical fitness of children and adolescents? A. Children and adolescents are overly concerned with exercise and fitness. B. A combination of poor nutrition and a sedentary lifestyle are leading to greater occurrences of obesity in children and adolescents. C. Children and adolescents are getting too much of the wrong kind of exercise. D. Although the diets of children and adolescents have improved over the years, participation in exercise has decreased . Please select the best answer from the choices provided.