Final answer:
The correct answer is A) A Broadway musical. "Rhapsody in Blue" was initially written by George Gershwin for the 1924 concert, "An Experiment in Modern Music," which combined classical music and jazz.
Step-by-step explanation:
The correct answer is A) A Broadway musical. "Rhapsody in Blue" was initially written by George Gershwin as a musical composition for the 1924 concert, "An Experiment in Modern Music," which was a combination of classical music and jazz. It premiered in New York City and featured the composer himself as the piano soloist.