Respuesta :
					                   I think that the answer is a because b is covered if you do calisthetics and c, d are done if you go to a gym
					                
					                
					             
					                   I believe A. Lack of self-management skills 
Because people always complain about not having the time- that falls under management.
					                
					             Because people always complain about not having the time- that falls under management.
 
					                  