Because the Harlem Renaissance happened after the first World War, option C is not a correct answer. Similarly incorrect, option B poses that said movement was characterized by the low number of African-American writers, when the reality was that the completely opposite took place; the Harlem Renaissance was THE time for African-American authors and many of them were recognized during this movement.
Therefore, your best answer is option A, as this time period was also characterized by the development and popularization of Jazz as a widely known and consumed musical genre due to the amount of Jazz clubs at the time.
