In order to make money from these two movies, the producers had to make many, many copies of the film stock, travel with physical copies of the films, and play the movies in traditional theaters.

A. Why was this the only option the filmmakers had for showing their movies?

Films at the time could not have synchronous sound and video, and audio speakers did not exist yet. This meant all movies had to be silent, even if they had a score (i.e., music written and performed for the movies), sound effects, and speaking actors.

B. How did the filmmakers make sure their audiences could hear the movie's music and sounds?