When notes sounded together tend to be grating or unpleasant, the resulting sound is called

The Carole King album that stayed on the charts and sold 20 million copies:

a. You've Got a Friend b. Tapestry c. You're So Vain d. Pearls

Briefly outline the history of the fresco medium from ancient times through the twentieth century. Select one particular fresco work and explain how, where, and when it was created. Identify the artist and place the work in one of the thematic categories. 

What will be an ideal response?