Answer:
B. Repeated rhythm pattern
Explanation:
Ostinato is a term from music referring to a rhythmic pattern, part of a tune, or a complete melody that is repeated in the same musical voice and frequently in the same pitch as well. The word ostinato comes from Italian and means stubborn (similar to English obstinate), giving us a hint about the nature of this persistently repeating pattern. A famous example of ostinato is Carol of the Bells, composed by Ukrainian composer Mykola Leontovych.
