There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior.
 
        
                    
             
        
        
        

Work done = 100J
Distance = 5 meters
Force = ? 

Force = 100/5 = 20N
Therefore, the force needed is 20 Newtons
 
        
             
        
        
        
A is the correct answer I belive