The most probable and most likely answer to this problem would be C. revealed much about their behavior.
Out of the four options presented in this problem, C. would only need a complete subject to make it a correct sentence. Options A. by closely watching and gathering data and B. to terrifying effect would probably need other more words and/or phrases to make them more complete. D. insect studies, on the other hand, can also be considered as a correct option IF insect become the subject.
        
                    
             
        
        
        
Answer:
Looks Guilty because there is more then one 
 
        
                    
             
        
        
        
Office supply with letter h is handbook
        
             
        
        
        
I just finished reading Alice and that looks good wouldn't change a thing :)
        
                    
             
        
        
        
Answer: B 
Explanation:
There is no need to put a comma after Jeremy , however to seperate the sentence to make the grammar correct you would need to put a comma after "and I".