Answer:
The direction of defliection of the site to the left I think .. 
 
        
             
        
        
        
Answer:
THE GROUND IS THE MEDIUM OF SEISMIC WAVES
 
        
             
        
        
        
again CORRECT ans is 4) light strikes the grooves → different wavelengths of light bend at different angles → diffracted wavelengths reach the eyes → the eyes see different colors.
moderator - plz review the ans as u deleted my right ans n approved the wrong ans :(