Answer:
A) Psalter and Hours of Bonne of Luxembourg, Duchess of Normandy
 
        
             
        
        
        
It starts slowly, with only a few instruments. Gradually speeds up the tempo, gradually gets louder, adding more instruments....but the same tune is repeated over and over again. The single the,e achieves unity. The tempo and dynamic changes (Loudness, speed) give is the variety.
        
             
        
        
        
If we stare at a pattern for a sufficient amount of time, our brains will cause the pattern to spontaneously reorganize itself. 
Many psychologists believed that humans' pattern recognition abilities exist to aid us in our survival. This ability make us able to quickly identify possible danger/occurrences from several sign, which will help us to produce faster fight or flight response.
 
        
             
        
        
        
I think I got the first chair