Chopin composed polonaises and mazurkas, which are based on A. French children's songs. B. hymns. C. original nineteenth-century tunes. D. dances.

D. dances.

Chopin was very much inspired by dances and used them in his composing as a basis on which to start. His first composition was a polonaise and his last was a mazurka, which shows how consistently he used these types of songs/dances in his music.