It shows he has life experience and knows what he’s talking about
        
                    
             
        
        
        
Answer:
A medium refers to the materials that are used to create a work of art .
 
        
             
        
        
        
"she" would be the pronoun.
You can rewrite this question as "She is your best friend?"
So in that case, "she" would be the subject.
In English, you just switch around "is" and the subject to make a question and make it sound Englishy
PS in Italian (and probably other languages) you would just say "She is your best friend?"