Answer: Choice C
Explanation: The maximum weight you can lift in a single rep. The most weight you can lift.
 
        
             
        
        
        
Answer:
 is part of the cardiovascular system;  
pumps blood to the cells in the body works; 
closely with the lungs
Explanation:
The heart is a muscle that  pumps blood through the blood vessels and that is the essential function. It is the main and central organ of the circulatory system.  
The heart weights between 200 and 425 grams. It is located between lungs, in the middle of the chest and it is divided into four chambers in humans, other mammals, and birds heart.  
 
        
                    
             
        
        
        
Being a living example of a tobacco-free lifestyle can: all of the above.
All of the listed options is an example of a tobacco-free lifestyle. It could certainly prevent others from trying to smoke, convince others to stop smoking, and make others around you more healthy. 
        
                    
             
        
        
        
Pain or discomfort in the stomach associated with difficulty in digesting food is called indigestion.