The term "appoggiatura" is a type of ornament in music. It typically refers to a non-chord tone that is approached by a leap and resolved by a step to a chord tone.
"Da capo" is a musical form, "ripieno" refers to the full ensemble in a concertino versus ripieno context (like in a concerto grosso), and "fugu" seems to be a misspelling of "fugue," which is a compositional technique.
Therefore, the correct answer from the options provided is appoggiatura.