Which type of performance space was originally built into hillsides in Greece?

Which of the following is an ethnographic film?

a. Blacksmith Scene b. Nanook of the North c. Fred Ott’s Sneeze d. The Barber Shop

Buddy Holly was one of the first rock and roll performers to

a. become a commodity. b. gyrate suggestively during a performance. c. record cover versions of songs by other writers. d. write his own songs.