Identify the instrument featured in the listening example

When an artist places one object in front of another to create the illusion of depth, it is called __________

a. linear perspective b. value contrast c. overlapping d. relative size e. afterimage

The critic _____ wrote a scathing review of Whistler's Nocturne in Black and Gold

a. John Ruskin b. Edvard Munch c. Charles Darwin d. Clement Greenberg