What is the main idea of this passage? ballet is a demanding art form that requires time and dedication to perfect. ballet dancers must have great flexibility and body strength. in addition, a dancer must memorize every movement of the performance. a choreographer creates the ballet steps and the dancers learn them. it may take years for a dancer to refine his or her movements. a. there are many types of ballet. b. choreographers design a ballet performance. c. learning ballet takes time and effort. d. ballet requires dancers to memorize their moves. e. each type of ballet requires different skills.