Well, a prepositional phrase must include a preposition and object of preposition. "After a heated discussion"  includes a preposition (After) and an object of preposition (Discussion) so the answer would be A. 
        
             
        
        
        
Answer:
complex, since it contains a prepositional phrase
 
        
             
        
        
        
30 hands will be shaked because each Person shakes 5 hands and 5x6=30 
Answer: 30
        
             
        
        
        
I believe it's D). A creature with tentacles and a round body.