Which genre of music Chopin did not compose: a) waltz b) opera c) polonaise d) mazurka

Chopin did not compose opera. While he wrote a few vocal pieces, his primary focus was instrumental music. His most famous works are the piano pieces, which include waltzes, polonaises, mazurkas, and nocturnes. He also wrote a few chamber music pieces, such as string quartets, but his main focus was on piano music. He was well-known for his inventive use of harmony and melody to create beautiful and evocative music.