Final answer:
Jazz music is distinguished from other genres by two qualities: improvisation and syncopation.
Step-by-step explanation:
Jazz music has two qualities that most readily distinguish it from other popular genres. Improvisation is a key characteristic of jazz, where musicians create and play spontaneous melodies and solos. This gives jazz a unique sense of creativity and individuality. Another distinguishing quality of jazz is its use of syncopation, which refers to the offbeat rhythms and accents that create a lively and energetic feel. These qualities set jazz apart from other genres like classical music or pop music.