A.
B. and C. both are missing commas in their sentences. A doesn't require a comma anywhere
        
             
        
        
        
The correct answer is B.
That is because A and C are scientific facts, while B is not. Some might consider it to be too expensive while other might not think so.
        
             
        
        
        
Answer:
It was a wonderful experience talking to him
Explanation:
 
        
             
        
        
        
Hey! 
This is an example of an idiom.
        
                    
             
        
        
        
Inscects may contain vemon that may be harmfull to children and adults which can cause the to have allergic reaction or seizures or even death in some cases