The correct answer is B.
A combination of poor nutrition and a sedentary lifestyle are leading to greater occurrences of obesity in children and adolescents. This is true, especially in first world countries like the US. Children and adolescents are not as physically active as they used to be around 20 - 30 years ago due to advances in technology. The diets tend to be high in sugar and processed food as they are cheaper and easier to buy and easier to feed the kids with. 
 
        
                    
             
        
        
        
Hi,
Elite athletes typically have a higher risk of b. hip and spine fracture  than other
individuals who participate in low to moderate levels of physical
activity. 
b. hip and spine fracture
        
             
        
        
        
C. minor strains and sprain
        
             
        
        
        
The placenta via the umbilical vein.