What anonymous arts collective of the 1980s called itself the "conscience of the art world"?

In Aeschylus's Oresteia, the dead bodies of two characters were shown to the audience by means of a platform that rolled or rotated into the performance space. This platform was called a(n):

a. eccyclema b. mechane c. onkos d. orchestra e. skene

French people saw Rococo architecture as ____

a. Neoclassical b. masculine c. neutral d. feminine