Answer: 
Barriers were categorized into one of seven categories; lack of time, lack of social influence, lack of energy, lack of resources, lack of willpower, fear of injury and lack of skill. Furthermore, the questionnaire included 15 questions for barriers to healthy diet.
 
        
             
        
        
        
Answer: Blood type
Explanation: As a rule of thumb, the less you weigh, the more alcohol consumption will affect your body and BAC. The reason being that heavier people tend to have more water in their bodies, which helps dilute alcohol, thereby reducing their BAC.
 
        
                    
             
        
        
        
I'm not entirerly sure whether ANY of these statements could be considered untrue. 
Socializing up to a certain extent could increase productivity, granted it would be done with work in mind. 
B, C, D all are true as these are very commonplace things that can happen at the workplace, while not all are equally probable all of them could happen.
If one really is considered untrue, it most likely would be A. 
        
             
        
        
        
I would say it is most likely skills or information. It can be broadly interpreted in it's contest. It mostly likely co-insides with your required reading terms. I encourage you to use your best judgement.