Answer:
I think it's prospective cost-based rate
Explanation:
 
        
             
        
        
        
B. Lactic acid build up creates pains and aches on the muscles
        
             
        
        
        
Answer:
keep straight legs is not normal but having arms out I think is also wrong, so now I'm confused too
Explanation:
 
        
                    
             
        
        
        
The correct answer is "It increases endurance."
The more you do sports, the longer your body will be able to endure long periods of playing, exercising, and training. This is because continuous engagement in sports will help your body to grow stronger.