Answer:
B) flexible
In jazz music, melody is typically characterized by its flexibility and improvisation. Jazz musicians often improvise and vary the melody of a piece, adding their own personal touch and interpretation to the music. This contrasts with more traditional forms of music where the melody is more fixed and inflexible. Jazz melodies are often characterized by their rhythm and phrasing, and may include elements of swing, blues, and other musical styles. Jazz musicians often use the melody as a starting point for their improvisations, building on and altering the original melody to create something new and unique.