Answer:
An hour of physical education should be included in every student's school day because  exercise and ground field activities helps in improving the health and mental state of a student.
Explanation:
In today's competitive world, a huge pressure and stress in mainly thrown on the school students especially the young children. Exercise is one of the roles in life that makes any aged person healthy in such case, games and an hour under the sun enhances and relaxes the mind and body of a student mentally and physically. Physical education is not a temporary good health but it keeps a student healthy for a long period of time and therefore  an hour of physical education should be included in student's everyday school life not just for an escape route from pressure but also to take them away from today's technology for quite few minutes.
 
        
             
        
        
        
D. however, because it is a different tangent of the sentence.
        
                    
             
        
        
        
I think it’s B, if I get you wrong sorry. Please tell me if you got it right or not
        
             
        
        
        
Answer:
Quippe quae in domo sunt, alumni et doctores ad prandium