Synonyms include: vague inexplicit unclear uncertain unreadable and so on 
        
                    
             
        
        
        
Explanation:
A. Several science fiction novel was written by Jules Verne
B. The professor told Axel to point towards north
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Answer:The invention of the printing press. D. The invention of the combustible locomotive engine.
Explanation:
 
        
                    
             
        
        
        
The answer is 3. Outlines prevent unorganized essays because it is a complete thought it tells what is going on.