Final answer:
c. Ragtime and the blues are the styles of African-American music that led to the development of jazz.
Step-by-step explanation:
The styles of African-American music that led to the development of jazz are c. ragtime and the blues.
Ragtime was a popular music genre in the early 20th century that was characterized by syncopated rhythms and a lively, upbeat tempo. It emerged from African-American communities and featured pianos as the main instrument.
The blues, on the other hand, originated from African-American communities in the South and was known for its soulful and expressive melodies. It incorporated elements like bent or blue notes and expressed the struggles and experiences of African-Americans.