Final answer:
The third movement of Eine Kleine Nachtmusik is in the key of G major, with a form of Minuet and Trio, a tempo of Allegro, and a 3/4 meter.
Step-by-step explanation:
The key, form, tempo, and meter of the third movement in Wolfgang Amadeus Mozart's Eine Kleine Nachtmusik are distinct musical elements that characterize the piece. The correct answer is B) Key: G major, Form: Minuet and Trio, Tempo: Allegro, Meter: 3/4. In classical music, the third movement of a multi-movement work is often a dance, and in this case, it is structured as a Minuet and Trio, which is a type of dance form featuring a strong triple meter and a moderate to fast tempo.
The key of G major provides a bright and pleasant tonality that contrasts with the other movements of the piece. The Allegro tempo indicates a brisk and lively speed, whereas the 3/4 meter provides the rhythmic framework that is characteristic of a minuet.