Answer: B
Explanation:
In all the other ones, you are speaking. Verbal essentially means spoken, so non verbal is going to be not spoken. Therefore B is the best answer.
 
        
                    
             
        
        
        
Courageous behavior, especially in battle.
or, polite attention or respect given by men to women.
        
             
        
        
        
That's incorrect usage. 
You'd say "I haven't seen him"