Vit B 6 is can be found in many foods common in the american diet.  So the answer would be 4.  If she eats a well balanced diet that includes meats (beef, pork, chicken, and fish), vegetables, beans, grains she should have no problem getting enough B 6
        
             
        
        
        
The answer is : Tar
Tar is some sort of residual substance that we commonly found in tobacco products, which could cause the symptoms you've mentioned above
not only that, Tar is a highly carcinogenic substance, which mean that it generate high risk of cancer it get into our system
        
                    
             
        
        
        
They can watch informal videos,take notes and participate in the class/ask questions.