What two rhythm instruments do the Navajos of the Native American Church use to accompany their singing?

In a work such as Running Fence, by Christo and Jeanne-Claude, the creative act consists of:

a. raising funds. b. acquiring legal permits. c. finding volunteer workers. d. administering affairs. e. all of these.

Which of the artists below first had a success on the pop charts with "Crying in the Chapel"?

A. Elvis Presley B. The Chords C. The Orioles D. The Crew-Cuts