Which musical term indicates a graceful and elegant style of performance?

The term "Grazioso" is used in music to describe a performance that is characterized by gracefulness and elegance. In various compositions, when a passage is marked grazioso, it suggests that the musician should play in a light, flowing, and delicate manner, emphasizing beauty and expressiveness. This term often indicates a charming or pleasing quality in both the melody and overall interpretation of the piece, encouraging a sense of fluidity and movement that is aesthetically pleasing to the listener.

The other terms do not convey the same meaning; for example, "Melodioso" suggests a focus on melody rather than style, "Adagio" refers to a slow tempo, and "Vigoroso" implies a vigorous or strong manner of playing. Thus, "Grazioso" is the most fitting choice when looking for a term that denotes an elegant and graceful style.