Which of the following musicians is known as a key figure in the Latin Jazz movement?

Mario Bauzá is recognized as a pivotal figure in the Latin Jazz movement due to his fusion of Afro-Cuban music with jazz elements. As a talented musician and arranger, he played a significant role in introducing Latin rhythms and instruments into jazz, which helped shape the genre's development and popularity in the United States. His collaborations with prominent artists and contributions to iconic bands, including the one led by Dizzy Gillespie, further established his influence in both Latin music and jazz. His work bridged cultural divides and paved the way for future generations of musicians exploring the blend of these rich musical traditions.

In contrast, while Antonio Carlos Jobim is associated with bossa nova—a genre that blends samba and jazz—he is not specifically linked to the Latin Jazz movement in the same way Bauzá is. Blind Lemon Jefferson, known for his role in blues music, does not relate to Latin Jazz, and Frank Grillo does not have the same recognition in the context of this musical movement as captured by Bauzá’s contributions.