Make bags of air with some potato slices at the bottom.
 
        
                    
             
        
        
        
Either a or b 
Explanation i remember my Neuro unit but it was a long time ago so I’m not 100%
        
                    
             
        
        
        
Soft palate 
The soft palate is composed of muscle and connective tissue, which give it both mobility and support. This palate is very flexible. When elevated for swallowing and sucking, it completely blocks and separates the nasal cavity and nasal portion of the pharynx from the mouth and the oral part of the pharynx.