Final answer:
a) Indian. Indian culture features the sitar most prominently in its music.
Step-by-step explanation:
The culture that features the sitar most prominently in its music is Indian culture. The sitar is a plucked string instrument that originated in India and is widely associated with classical Indian music, particularly the Hindustani classical music tradition. The sitar is known for its distinctive sound and is often used as the main instrument in Indian classical music performances.