Read this passage from "marian anderson sings": "anderson's manager wrote to make arrangements. the date he wanted was already taken, he was told. he suggested other dates in april. he was told that those were taken, too. in fact, no dates were available at all." why does the author of the story include this passage? a. to show that anderson was not popular enough to be able to reserve constitution hall b. to show how difficult and competitive the music business can be