Reich's 1993 work, the cave, requires a. eighteen musicians and five video screens. b. drums, percussion, singers, and dancers. c. audience interaction. d. two days to perform.

The Cave required a total of 18 musicians and five video screens. The correct answer is A.

Explanation:

The Cave was an opera that had a total of 3 acts. The opera was first played in 1993 in Vienna. The opera was performed by the Steve Reich Ensemble. The opera had both spoken parts that were  interviewed by American, Israeli, and Palestinian religious experts. There were also excerpts from the story of Abraham that were in the opera. Images and spoken part were displayed on the screens in the theaters where the opera were performed.

the answer of "what has three legs but never walks" is a yard stick. this answer can be found at

i think it's about 10 mins.

actually i think that's wrong, but i don't know how to delete this.

but who knows it might be right.