Deteriorate or muscles slowly become weak would be your answer
        
             
        
        
        
13 is c. 14 is d. and 15 is b
        
             
        
        
        
Correct answer choice is :
C) Rowing 
Explanation:
Muscular endurance is the capacity of a muscle or combination of tissues to provide repeated reductions on a stand for an extensive duration of time. It is one of the elements of muscular health, along with muscular energy and potential.
 
        
                    
             
        
        
        
Body mass index (bmi) is a measure of body weight relative to which factor?   
 b. age 
 d. height