Since a participle takes the form: verb + -ing, the only word in this sentence which has such a form is B, 'challenging'. 'Puzzle' is a noun, 'crossword' is an adjective, 'created' is a verb.
        
             
        
        
        
Look it up, you will be able to find it there
        
                    
             
        
        
        
Are you asking for which ones are metaphors ?? 
If so...
The building was a maze
The sidewalk could fry an egg
Her eyes drilled into my face
The company is buried in work.
Those are all metaphors the others are literal
        
             
        
        
        
Explanation:
what were you doing when i called.