Answer:
You drew this its not even a question 
Explanation:
How do I answer this if theirs no question 
 
        
             
        
        
        
B. Soil Contamination
All the other answers are talking about clean and pure things while this answer is the only negative one. So B is your answer.
        
             
        
        
        
Answer:
            The correct option is a (true).
Reason:
             Carbon dioxide and methane gas are the principle's gas  components
present in magma.