It's A and C, #platolivesmatter
        
                    
             
        
        
        
Intrasitive is the answer for sure
        
             
        
        
        
Answer:
definition
Explanation:
the others are the same the way they are
 
        
             
        
        
        
Since astute means someone is very sharp and perceptive, I would say astute has a positive connotation. 
Hope this helps! :)
        
                    
             
        
        
        
The answer is to become interested in or engaged in something