Answer:
c) Rhythm
Step-by-step explanation:
Rhythm is at the heart of African music. African music is known for its intricate and diverse rhythmic patterns, which often involve complex polyrhythms, syncopation, and percussive elements. Melody and harmony are also important aspects of African music, but rhythm is particularly central and distinctive in many African musical traditions. Additionally, African music has a strong oral tradition, and notation (written music) is not as commonly used as it is in some other musical traditions.